diff --git a/web/src/components/AgentArtifactsCard.vue b/web/src/components/AgentArtifactsCard.vue
index 71cd9ab2..117b9960 100644
--- a/web/src/components/AgentArtifactsCard.vue
+++ b/web/src/components/AgentArtifactsCard.vue
@@ -7,11 +7,7 @@
         :title="`打开 ${file.name}`"
         @click="openPreview(file)"
       >
-        <component
-          :is="getFileIcon(file.path)"
-          class="item-icon"
-          :style="{ color: getFileIconColor(file.path) }"
-        />
+        <FileTypeIcon :name="file.path" :size="20" class="item-icon" />
         <div class="item-meta">
           <div class="item-name">{{ file.name }}</div>
           <div class="item-desc">{{ getFileMetaLabel(file.path) }}</div>
@@ -41,7 +37,7 @@ import { computed, ref } from 'vue'
 import { message } from 'ant-design-vue'
 import { Download, LoaderCircle, Save } from 'lucide-vue-next'
 import { threadApi } from '@/apis/agent_api'
-import { getFileIcon, getFileIconColor } from '@/utils/file_utils'
+import FileTypeIcon from '@/components/common/FileTypeIcon.vue'
 import { downloadViewerFile } from '@/apis/viewer_filesystem'
 
 const props = defineProps({
diff --git a/web/src/components/AgentChatComponent.vue b/web/src/components/AgentChatComponent.vue
index fffd9885..0dfd106f 100644
--- a/web/src/components/AgentChatComponent.vue
+++ b/web/src/components/AgentChatComponent.vue
@@ -246,10 +246,10 @@
                 </div>
                 <div v-if="currentStateFiles.length" class="state-list">
                   <div v-for="file in currentStateFiles" :key="file.key" class="state-list-item">
-                    <component
-                      :is="file.icon"
+                    <FileTypeIcon
+                      :name="file.name || file.path"
+                      :size="18"
                       class="state-list-item-icon"
-                      :style="{ color: file.iconColor }"
                     />
                     <div class="state-list-item-body">
                       <div class="state-list-item-title">{{ file.name }}</div>
@@ -274,10 +274,10 @@
                     :title="`打开 ${file.name}`"
                     @click="openPanelPreview(file)"
                   >
-                    <component
-                      :is="file.icon"
+                    <FileTypeIcon
+                      :name="file.name || file.path"
+                      :size="18"
                       class="state-list-item-icon"
-                      :style="{ color: file.iconColor }"
                     />
                     <div class="state-list-item-body">
                       <div class="state-list-item-title">{{ file.name }}</div>
@@ -362,7 +362,8 @@ import {
 } from 'vue'
 import { message } from 'ant-design-vue'
 import { RefreshCw, SquareCheck } from 'lucide-vue-next'
-import { getFileIcon, getFileIconColor, formatFileSize } from '@/utils/file_utils'
+import { formatFileSize } from '@/utils/file_utils'
+import FileTypeIcon from '@/components/common/FileTypeIcon.vue'
 import { generatePixelAvatar } from '@/utils/pixelAvatar'
 import {
   CheckCircleOutlined,
@@ -720,9 +721,7 @@ const currentArtifactFiles = computed(() =>
     .map((path) => ({
       path,
       name: getPanelFileName({ path }),
-      meta: getArtifactMetaLabel(path),
-      icon: getFileIcon(path),
-      iconColor: getFileIconColor(path)
+      meta: getArtifactMetaLabel(path)
     }))
 )
 const currentTodos = computed(() => {
@@ -780,9 +779,7 @@ const currentStateFiles = computed(() => {
       key: path,
       path,
       name,
-      meta: [status, sizeLabel === '-' ? '' : sizeLabel, path].filter(Boolean).join(' · '),
-      icon: getFileIcon(name || path),
-      iconColor: getFileIconColor(name || path)
+      meta: [status, sizeLabel === '-' ? '' : sizeLabel, path].filter(Boolean).join(' · ')
     })
   }
 
diff --git a/web/src/components/AgentFilePreview.vue b/web/src/components/AgentFilePreview.vue
index c3678426..a7fa9bcb 100644
--- a/web/src/components/AgentFilePreview.vue
+++ b/web/src/components/AgentFilePreview.vue
@@ -5,11 +5,7 @@
   >
     <div v-if="showHeader" class="preview-header">
       <div class="file-title">
-        <component
-          v-if="showFileIcon"
-          :is="getFileIcon(filePath)"
-          :style="{ color: getFileIconColor(filePath), fontSize: '18px' }"
-        />
+        <FileTypeIcon v-if="showFileIcon" :name="filePath" :size="18" />
         <span class="file-path-title">{{ filePath }}</span>
       </div>
       <div class="modal-actions">
@@ -269,8 +265,8 @@ import {
 } from 'lucide-vue-next'
 import hljs from 'highlight.js/lib/common'
 import MarkdownPreview from '@/components/common/MarkdownPreview.vue'
+import FileTypeIcon from '@/components/common/FileTypeIcon.vue'
 import { useThemeStore } from '@/stores/theme'
-import { getFileIcon, getFileIconColor } from '@/utils/file_utils'
 import { escapeHtml } from '@/utils/html'
 import {
   getCodeLanguageByPath,
diff --git a/web/src/components/AgentInputArea.vue b/web/src/components/AgentInputArea.vue
index d6107726..b692f6f8 100644
--- a/web/src/components/AgentInputArea.vue
+++ b/web/src/components/AgentInputArea.vue
@@ -47,8 +47,8 @@
             :key="attachment.fileId"
             class="attachment-file-card"
           >
-            <div class="attachment-file-icon" :style="{ color: attachment.iconColor }">
-              <component :is="attachment.icon" />
+            <div class="attachment-file-icon">
+              <FileTypeIcon :name="attachment.name" :size="18" />
             </div>
             <div class="attachment-file-body">
               <div class="attachment-file-name" :title="attachment.name">{{ attachment.name }}</div>
@@ -95,6 +95,7 @@ import ImagePreviewComponent from '@/components/ImagePreviewComponent.vue'
 import AttachmentOptionsComponent from '@/components/AttachmentOptionsComponent.vue'
 import { X } from 'lucide-vue-next'
 import { normalizeAttachmentPreviews } from '@/utils/file_utils'
+import FileTypeIcon from '@/components/common/FileTypeIcon.vue'
 
 const props = defineProps({
   modelValue: { type: String, default: '' },
diff --git a/web/src/components/AgentMessageComponent.vue b/web/src/components/AgentMessageComponent.vue
index cd10f08e..09c0a71c 100644
--- a/web/src/components/AgentMessageComponent.vue
+++ b/web/src/components/AgentMessageComponent.vue
@@ -121,8 +121,8 @@
       :key="attachment.fileId"
       class="message-attachment-file"
     >
-      <div class="message-attachment-icon" :style="{ color: attachment.iconColor }">
-        <component :is="attachment.icon" />
+      <div class="message-attachment-icon">
+        <FileTypeIcon :name="attachment.name" :size="18" />
       </div>
       <div class="message-attachment-body">
         <div class="message-attachment-name" :title="attachment.name">
@@ -148,6 +148,7 @@ import { storeToRefs } from 'pinia'
 import { MessageProcessor } from '@/utils/messageProcessor'
 import { normalizeAttachmentPreviews } from '@/utils/file_utils'
 import { buildMentionDisplayLabels } from '@/utils/mention_utils'
+import FileTypeIcon from '@/components/common/FileTypeIcon.vue'
 import { enrichTaskToolCalls } from '@/components/ToolCallingResult/toolRegistry'
 
 const props = defineProps({
diff --git a/web/src/components/AgentPanel.vue b/web/src/components/AgentPanel.vue
index 7f27e76a..4d45b9eb 100644
--- a/web/src/components/AgentPanel.vue
+++ b/web/src/components/AgentPanel.vue
@@ -16,11 +16,7 @@
               :title="tab.path"
               @click="activatePreviewTab(tab.path)"
             >
-              <component
-                :is="getFileIcon(tab.path)"
-                class="preview-tab-icon"
-                :style="{ color: getFileIconColor(tab.path) }"
-              />
+              <FileTypeIcon :name="tab.path" :size="16" class="preview-tab-icon" />
               <span class="preview-tab-name">{{ tab.name }}</span>
             </button>
             <button
@@ -137,7 +133,7 @@ import { Download, Folders, RefreshCw, Trash2, X } from 'lucide-vue-next'
 import { Modal, message } from 'ant-design-vue'
 import FileTreeComponent from '@/components/FileTreeComponent.vue'
 import AgentFilePreview from '@/components/AgentFilePreview.vue'
-import { getFileIcon, getFileIconColor } from '@/utils/file_utils'
+import FileTypeIcon from '@/components/common/FileTypeIcon.vue'
 import {
   deleteViewerFile,
   downloadViewerFile,
diff --git a/web/src/components/AttachmentTmpUploadModal.vue b/web/src/components/AttachmentTmpUploadModal.vue
index 0a5a5b97..975124ca 100644
--- a/web/src/components/AttachmentTmpUploadModal.vue
+++ b/web/src/components/AttachmentTmpUploadModal.vue
@@ -22,8 +22,8 @@
 
     <div v-if="fileItems.length" class="attachment-list">
       <div v-for="item in fileItems" :key="item.localId" class="attachment-item">
-        <div class="attachment-file-icon" :style="{ color: getFileIconColor(item.fileName) }">
-          <component :is="getFileIcon(item.fileName)" />
+        <div class="attachment-file-icon">
+          <FileTypeIcon :name="item.fileName" :size="20" />
         </div>
 
         <div class="attachment-item-content">
@@ -152,7 +152,7 @@ import { message } from 'ant-design-vue'
 import { ChevronDown, ChevronUp, X } from 'lucide-vue-next'
 import { threadApi } from '@/apis'
 import { ocrApi } from '@/apis/system_api'
-import { getFileIcon, getFileIconColor } from '@/utils/file_utils'
+import FileTypeIcon from '@/components/common/FileTypeIcon.vue'
 
 const props = defineProps({
   open: { type: Boolean, default: false },
diff --git a/web/src/components/FileDetailModal.vue b/web/src/components/FileDetailModal.vue
index 98828ef2..2a323f0e 100644
--- a/web/src/components/FileDetailModal.vue
+++ b/web/src/components/FileDetailModal.vue
@@ -12,7 +12,7 @@
       <div class="modal-title-wrapper">
         <!-- 左侧：文件名和图标 -->
         <div class="file-title">
-          <component :is="fileIcon" :style="{ color: fileIconColor, fontSize: '18px' }" />
+          <FileTypeIcon :name="file?.filename" :size="18" />
           <span class="file-name">{{ file?.filename || '文件详情' }}</span>
         </div>
 
@@ -123,9 +123,9 @@ import { useDatabaseStore } from '@/stores/database'
 import { message } from 'ant-design-vue'
 import { documentApi } from '@/apis/knowledge_api'
 import { mergeChunks } from '@/utils/chunkUtils'
-import { getFileIcon, getFileIconColor } from '@/utils/file_utils'
 import { getPreviewTypeByPath } from '@/utils/file_preview'
 import MarkdownPreview from '@/components/common/MarkdownPreview.vue'
+import FileTypeIcon from '@/components/common/FileTypeIcon.vue'
 import { Download, ChevronDown, FileText, X } from 'lucide-vue-next'
 
 const store = useDatabaseStore()
@@ -138,10 +138,6 @@ const visible = computed({
 const file = computed(() => store.selectedFile)
 const loading = computed(() => store.state.fileDetailLoading)
 
-// 文件图标
-const fileIcon = computed(() => getFileIcon(file.value?.filename))
-const fileIconColor = computed(() => getFileIconColor(file.value?.filename))
-
 const downloadingOriginal = ref(false)
 const downloadingMarkdown = ref(false)
 const sourcePreviewLoading = ref(false)
diff --git a/web/src/components/FileTable.vue b/web/src/components/FileTable.vue
index 240fe555..7d60f70f 100644
--- a/web/src/components/FileTable.vue
+++ b/web/src/components/FileTable.vue
@@ -226,24 +226,12 @@
         <div v-if="column.key === 'filename'">
           <template v-if="record.is_folder">
             <span class="folder-row" @click="toggleExpand(record)">
-              <component
-                :is="
-                  expandedRowKeys.includes(record.file_id) ? h(FolderOpenFilled) : h(FolderFilled)
-                "
-                style="margin-right: 8px; color: #ffb800; font-size: 16px"
-              />
+              <FileTypeIcon is-dir :size="16" :style="{ marginRight: '8px' }" />
               {{ record.filename }}
             </span>
           </template>
           <a-button v-else class="main-btn" type="link" @click="openFileDetail(record)">
-            <component
-              :is="getFileIcon(record.displayName || text)"
-              :style="{
-                marginRight: '0',
-                color: getFileIconColor(record.displayName || text),
-                fontSize: '16px'
-              }"
-            />
+            <FileTypeIcon :name="record.displayName || text" :size="16" :style="{ marginRight: '8px' }" />
             {{ record.displayName || text }}
           </a-button>
         </div>
@@ -389,8 +377,6 @@ import {
   HourglassFilled,
   CloseCircleFilled,
   ClockCircleFilled,
-  FolderFilled,
-  FolderOpenFilled,
   FileTextFilled
 } from '@ant-design/icons-vue'
 import {
@@ -1167,9 +1153,10 @@ const handleIndexConfigCancel = () => {
 }
 
 // 导入工具函数
-import { getFileIcon, getFileIconColor, formatStandardTime } from '@/utils/file_utils'
+import { formatStandardTime } from '@/utils/file_utils'
 import { buildChunkParamsPayload, isPlainObject } from '@/utils/chunk_presets'
 import ChunkParamsConfig from '@/components/ChunkParamsConfig.vue'
+import FileTypeIcon from '@/components/common/FileTypeIcon.vue'
 </script>
 
 <style scoped>
@@ -1282,6 +1269,8 @@ import ChunkParamsConfig from '@/components/ChunkParamsConfig.vue'
 }
 
 .my-table .main-btn {
+  display: flex;
+  justify-content: center;
   padding: 0;
   height: auto;
   line-height: 1.4;
diff --git a/web/src/components/FileTreeComponent.vue b/web/src/components/FileTreeComponent.vue
index f071784b..e4120fe0 100644
--- a/web/src/components/FileTreeComponent.vue
+++ b/web/src/components/FileTreeComponent.vue
@@ -17,11 +17,7 @@
       <template #icon="{ data, expanded }">
         <slot name="icon" :node="data" :expanded="expanded">
           <template v-if="data.isLeaf">
-            <component
-              v-if="useFileIcons"
-              :is="getFileIcon(data.key)"
-              :style="{ color: getFileIconColor(data.key), fontSize: '16px' }"
-            />
+            <FileTypeIcon v-if="useFileIcons" :name="data.key" :size="16" />
             <FileText v-else :size="16" class="file-icon" />
           </template>
           <template v-else>
@@ -30,8 +26,7 @@
               class="folder-loading-icon"
               aria-label="正在加载"
             ></span>
-            <FolderOpen v-else-if="expanded" :size="18" class="folder-icon open" />
-            <Folder v-else :size="18" class="folder-icon" />
+            <FileTypeIcon v-else is-dir :size="18" />
           </template>
         </slot>
       </template>
@@ -55,8 +50,8 @@
 
 <script setup>
 import { ref } from 'vue'
-import { Folder, FolderOpen, FileText } from 'lucide-vue-next'
-import { getFileIcon, getFileIconColor } from '@/utils/file_utils'
+import { FileText } from 'lucide-vue-next'
+import FileTypeIcon from '@/components/common/FileTypeIcon.vue'
 
 const props = defineProps({
   treeData: {
diff --git a/web/src/components/FileUploadModal.vue b/web/src/components/FileUploadModal.vue
index a87f401e..da997db9 100644
--- a/web/src/components/FileUploadModal.vue
+++ b/web/src/components/FileUploadModal.vue
@@ -293,7 +293,7 @@
             @click="openWorkspaceDirectory(item.path)"
           >
             <a-checkbox disabled />
-            <Folder :size="14" class="workspace-file-icon" />
+            <FileTypeIcon is-dir :size="16" class="workspace-file-icon" />
             <span class="workspace-file-name" :title="item.path">{{ item.name }}</span>
           </button>
 
@@ -308,7 +308,7 @@
               :disabled="!item.supported || chunkLoading"
               @change="toggleWorkspacePath(item.path, $event.target.checked)"
             />
-            <FileText :size="14" class="workspace-file-icon" />
+            <FileTypeIcon :name="item.path" :size="16" class="workspace-file-icon" />
             <span class="workspace-file-name" :title="item.path">{{ item.path }}</span>
             <span class="workspace-file-size">{{ formatFileSize(item.size) }}</span>
           </label>
@@ -423,9 +423,7 @@ import { ReloadOutlined } from '@ant-design/icons-vue'
 import {
   FileUp,
   FolderUp,
-  Folder,
   FolderOpen,
-  FileText,
   ArrowLeft,
   RotateCw,
   CircleHelp,
@@ -439,6 +437,7 @@ import {
 } from 'lucide-vue-next'
 import { buildChunkParamsPayload } from '@/utils/chunk_presets'
 import ChunkParamsConfig from '@/components/ChunkParamsConfig.vue'
+import FileTypeIcon from '@/components/common/FileTypeIcon.vue'
 
 const props = defineProps({
   visible: {
diff --git a/web/src/components/MessageInputComponent.vue b/web/src/components/MessageInputComponent.vue
index 1ce1b37c..062fbe83 100644
--- a/web/src/components/MessageInputComponent.vue
+++ b/web/src/components/MessageInputComponent.vue
@@ -60,9 +60,10 @@
               @click="insertMention(item)"
             >
               <div class="file-info-left">
-                <component
-                  :is="item.is_dir ? FolderFilled : getFileIcon(item.label)"
-                  :style="{ color: item.is_dir ? '#ffa940' : getFileIconColor(item.label) }"
+                <FileTypeIcon
+                  :name="item.label"
+                  :is-dir="item.is_dir"
+                  :size="16"
                   class="file-type-icon"
                 />
                 <span class="file-name" :title="item.label">
@@ -280,10 +281,10 @@ import {
   h,
   render
 } from 'vue'
-import { SendOutlined, ArrowUpOutlined, PauseOutlined, FolderFilled } from '@ant-design/icons-vue'
+import { SendOutlined, ArrowUpOutlined, PauseOutlined } from '@ant-design/icons-vue'
 import { Paperclip } from 'lucide-vue-next'
 import { searchMentionFiles } from '@/apis/mention_api'
-import { getFileIcon, getFileIconColor } from '@/utils/file_utils'
+import FileTypeIcon from '@/components/common/FileTypeIcon.vue'
 import {
   getMentionIconComponent,
   getMentionIconStyle,
@@ -472,14 +473,25 @@ const createEditorMentionElement = (segment) => {
   const icon = document.createElement('span')
   icon.className = 'mention-ref-icon'
   icon.dataset.vueIcon = 'true'
-  Object.assign(icon.style, getMentionIconStyle(segment.type, segment.value) || {})
-  render(
-    h(getMentionIconComponent(segment.type, segment.value), {
-      size: MENTION_ICON_SIZE,
-      strokeWidth: MENTION_ICON_STROKE_WIDTH
-    }),
-    icon
-  )
+  if (segment.type === 'file') {
+    render(
+      h(FileTypeIcon, {
+        name: segment.value,
+        isDir: segment.value.endsWith('/'),
+        size: MENTION_ICON_SIZE
+      }),
+      icon
+    )
+  } else {
+    Object.assign(icon.style, getMentionIconStyle(segment.type, segment.value) || {})
+    render(
+      h(getMentionIconComponent(segment.type, segment.value), {
+        size: MENTION_ICON_SIZE,
+        strokeWidth: MENTION_ICON_STROKE_WIDTH
+      }),
+      icon
+    )
+  }
   token.appendChild(icon)
 
   const label = document.createElement('span')
diff --git a/web/src/components/common/MentionTextRenderer.vue b/web/src/components/common/MentionTextRenderer.vue
index 0f7c1f73..50da8720 100644
--- a/web/src/components/common/MentionTextRenderer.vue
+++ b/web/src/components/common/MentionTextRenderer.vue
@@ -12,7 +12,15 @@
         :data-mention-value="editable ? segment.value : undefined"
         :title="segment.raw"
       >
+        <FileTypeIcon
+          v-if="segment.type === 'file'"
+          class="mention-ref-icon"
+          :name="segment.value"
+          :is-dir="segment.value.endsWith('/')"
+          :size="MENTION_ICON_SIZE"
+        />
         <component
+          v-else
           :is="getMentionIconComponent(segment.type, segment.value)"
           class="mention-ref-icon"
           :style="getMentionIconStyle(segment.type, segment.value)"
@@ -34,6 +42,7 @@ import {
   MENTION_ICON_STROKE_WIDTH
 } from '@/utils/mention_icon_utils'
 import { getMentionDisplayLabel, parseMentionText } from '@/utils/mention_utils'
+import FileTypeIcon from '@/components/common/FileTypeIcon.vue'
 
 const props = defineProps({
   content: {
diff --git a/web/src/components/workspace/WorkspaceFileList.vue b/web/src/components/workspace/WorkspaceFileList.vue
index c93bd753..4db4f9fb 100644
--- a/web/src/components/workspace/WorkspaceFileList.vue
+++ b/web/src/components/workspace/WorkspaceFileList.vue
@@ -86,12 +86,7 @@
           />
         </span>
         <span class="name-cell">
-          <Folder v-if="entry.is_dir" :size="17" class="folder-icon" />
-          <component
-            v-else
-            :is="getFileIcon(entry.name || entry.path)"
-            :style="{ color: getFileIconColor(entry.name || entry.path), fontSize: '16px' }"
-          />
+          <FileTypeIcon :name="entry.name || entry.path" :is-dir="entry.is_dir" :size="17" />
           <span class="entry-name" :title="entry.name">{{ entry.name }}</span>
         </span>
         <span>{{ entry.is_dir ? '-' : formatFileSize(entry.size) }}</span>
@@ -147,13 +142,9 @@
 
 <script setup>
 import { computed } from 'vue'
-import { Download, Folder, ListChecks, MoreHorizontal, Trash2 } from 'lucide-vue-next'
-import {
-  formatFileSize,
-  formatRelativeTime,
-  getFileIcon,
-  getFileIconColor
-} from '@/utils/file_utils'
+import { Download, ListChecks, MoreHorizontal, Trash2 } from 'lucide-vue-next'
+import { formatFileSize, formatRelativeTime } from '@/utils/file_utils'
+import FileTypeIcon from '@/components/common/FileTypeIcon.vue'
 
 const props = defineProps({
   entries: { type: Array, default: () => [] },
diff --git a/web/src/utils/file_utils.js b/web/src/utils/file_utils.js
index ec65c64e..311f469c 100644
--- a/web/src/utils/file_utils.js
+++ b/web/src/utils/file_utils.js
@@ -1,95 +1,6 @@
-import {
-  FileTextFilled,
-  FileMarkdownFilled,
-  FilePdfFilled,
-  FileWordFilled,
-  FileExcelFilled,
-  FileImageFilled,
-  FileFilled,
-  FilePptFilled,
-  FileZipFilled,
-  LinkOutlined,
-  CodeFilled
-} from '@ant-design/icons-vue'
 import { getPreviewFileExtension, getPreviewTypeByPath } from '@/utils/file_preview'
 import { formatRelative, parseToShanghai } from '@/utils/time'
 
-const DEFAULT_FILE_ICON = { icon: FileFilled, color: 'var(--gray-600)' }
-const LINK_FILE_ICON = { icon: LinkOutlined, color: 'var(--color-info-500)' }
-
-const FILE_ICON_CONFIG = {
-  txt: { icon: FileTextFilled, color: 'var(--color-info-500)' },
-  text: { icon: FileTextFilled, color: 'var(--color-info-500)' },
-  log: { icon: FileTextFilled, color: 'var(--color-info-500)' },
-  md: { icon: FileMarkdownFilled, color: 'var(--gray-700)' },
-  markdown: { icon: FileMarkdownFilled, color: 'var(--gray-700)' },
-  pdf: { icon: FilePdfFilled, color: 'var(--color-error-500)' },
-  doc: { icon: FileWordFilled, color: 'var(--color-info-700)' },
-  docx: { icon: FileWordFilled, color: 'var(--color-info-700)' },
-  xls: { icon: FileExcelFilled, color: 'var(--color-success-500)' },
-  xlsx: { icon: FileExcelFilled, color: 'var(--color-success-500)' },
-  csv: { icon: FileExcelFilled, color: 'var(--color-success-500)' },
-  ppt: { icon: FilePptFilled, color: 'var(--color-warning-700)' },
-  pptx: { icon: FilePptFilled, color: 'var(--color-warning-700)' },
-  apng: { icon: FileImageFilled, color: 'var(--color-accent-700)' },
-  avif: { icon: FileImageFilled, color: 'var(--color-accent-700)' },
-  jpg: { icon: FileImageFilled, color: 'var(--color-accent-700)' },
-  jpeg: { icon: FileImageFilled, color: 'var(--color-accent-700)' },
-  png: { icon: FileImageFilled, color: 'var(--color-accent-700)' },
-  gif: { icon: FileImageFilled, color: 'var(--color-accent-700)' },
-  bmp: { icon: FileImageFilled, color: 'var(--color-accent-700)' },
-  svg: { icon: FileImageFilled, color: 'var(--color-accent-700)' },
-  webp: { icon: FileImageFilled, color: 'var(--color-accent-700)' },
-  zip: { icon: FileZipFilled, color: 'var(--gray-700)' },
-  rar: { icon: FileZipFilled, color: 'var(--gray-700)' },
-  '7z': { icon: FileZipFilled, color: 'var(--gray-700)' },
-  tar: { icon: FileZipFilled, color: 'var(--gray-700)' },
-  gz: { icon: FileZipFilled, color: 'var(--gray-700)' },
-  py: { icon: CodeFilled, color: 'var(--color-primary-700)' },
-  js: { icon: CodeFilled, color: 'var(--color-primary-700)' },
-  jsx: { icon: CodeFilled, color: 'var(--color-primary-700)' },
-  ts: { icon: CodeFilled, color: 'var(--color-primary-700)' },
-  tsx: { icon: CodeFilled, color: 'var(--color-primary-700)' },
-  vue: { icon: CodeFilled, color: 'var(--color-primary-700)' },
-  sh: { icon: CodeFilled, color: 'var(--color-primary-700)' },
-  go: { icon: CodeFilled, color: 'var(--color-primary-700)' },
-  rs: { icon: CodeFilled, color: 'var(--color-primary-700)' },
-  cpp: { icon: CodeFilled, color: 'var(--color-primary-700)' },
-  c: { icon: CodeFilled, color: 'var(--color-primary-700)' },
-  h: { icon: CodeFilled, color: 'var(--color-primary-700)' },
-  java: { icon: CodeFilled, color: 'var(--color-primary-700)' },
-  html: { icon: CodeFilled, color: 'var(--color-primary-700)' },
-  htm: { icon: CodeFilled, color: 'var(--color-primary-700)' },
-  css: { icon: CodeFilled, color: 'var(--color-primary-700)' },
-  less: { icon: CodeFilled, color: 'var(--color-primary-700)' },
-  scss: { icon: CodeFilled, color: 'var(--color-primary-700)' },
-  sql: { icon: CodeFilled, color: 'var(--color-primary-700)' },
-  json: { icon: FileTextFilled, color: 'var(--color-primary-700)' },
-  yaml: { icon: FileTextFilled, color: 'var(--color-primary-700)' },
-  yml: { icon: FileTextFilled, color: 'var(--color-primary-700)' },
-  toml: { icon: FileTextFilled, color: 'var(--color-primary-700)' },
-  ini: { icon: FileTextFilled, color: 'var(--color-primary-700)' },
-  conf: { icon: FileTextFilled, color: 'var(--color-primary-700)' },
-  env: { icon: FileTextFilled, color: 'var(--color-primary-700)' }
-}
-
-const getFileIconConfig = (filename) => {
-  const normalizedName = String(filename || '')
-    .trim()
-    .toLowerCase()
-  if (!normalizedName) return DEFAULT_FILE_ICON
-  if (normalizedName.startsWith('http://') || normalizedName.startsWith('https://'))
-    return LINK_FILE_ICON
-
-  const cleanName = normalizedName.split(/[?#]/)[0]
-  const extension = cleanName.includes('.') ? cleanName.split('.').pop() : cleanName
-  return FILE_ICON_CONFIG[extension] || DEFAULT_FILE_ICON
-}
-
-export const getFileIcon = (filename) => getFileIconConfig(filename).icon
-
-export const getFileIconColor = (filename) => getFileIconConfig(filename).color
-
 export const formatRelativeTime = (value) => formatRelative(value)
 
 export const formatStandardTime = (value) => {
@@ -152,9 +63,7 @@ export const normalizeAttachmentPreview = (attachment) => {
     name,
     previewUrl: attachment?.original_artifact_url || attachment?.artifact_url || '',
     isImage: fileType.startsWith('image/') || getPreviewTypeByPath(name) === 'image',
-    meta: [typeLabel, sizeLabel === '-' ? '' : sizeLabel].filter(Boolean).join(' · '),
-    icon: getFileIcon(name),
-    iconColor: getFileIconColor(name)
+    meta: [typeLabel, sizeLabel === '-' ? '' : sizeLabel].filter(Boolean).join(' · ')
   }
 }
 
diff --git a/web/src/utils/mention_icon_utils.js b/web/src/utils/mention_icon_utils.js
index c2447d0a..07b1edd3 100644
--- a/web/src/utils/mention_icon_utils.js
+++ b/web/src/utils/mention_icon_utils.js
@@ -1,10 +1,9 @@
-import { FolderFilled } from '@ant-design/icons-vue'
 import { BookMarked, BookOpen, Bot, Plug } from 'lucide-vue-next'
-import { getFileIcon, getFileIconColor } from '@/utils/file_utils'
 
 export const MENTION_ICON_SIZE = 15
 export const MENTION_ICON_STROKE_WIDTH = 2.2
 
+// 注意：file 类型的图标由 FileTypeIcon 组件直接渲染，此处仅处理其余 mention 类型。
 const MENTION_TYPE_ICON_COMPONENTS = {
   knowledge: BookOpen,
   skill: BookMarked,
@@ -12,16 +11,6 @@ const MENTION_TYPE_ICON_COMPONENTS = {
   subagent: Bot
 }
 
-export const getMentionIconComponent = (type, value = '') => {
-  if (type === 'file') {
-    return String(value || '').endsWith('/') ? FolderFilled : getFileIcon(value)
-  }
-  return MENTION_TYPE_ICON_COMPONENTS[type] || Plug
-}
+export const getMentionIconComponent = (type) => MENTION_TYPE_ICON_COMPONENTS[type] || Plug
 
-export const getMentionIconStyle = (type, value = '') => {
-  if (type !== 'file') return null
-  return {
-    color: String(value || '').endsWith('/') ? '#ffa940' : getFileIconColor(value)
-  }
-}
+export const getMentionIconStyle = () => null