diff --git a/backend/package/yuxi/repositories/channels/content_review_record_repository.py b/backend/package/yuxi/repositories/channels/content_review_record_repository.py
index 7bbcbba9..dfd06c15 100644
--- a/backend/package/yuxi/repositories/channels/content_review_record_repository.py
+++ b/backend/package/yuxi/repositories/channels/content_review_record_repository.py
@@ -261,7 +261,7 @@ class ChannelContentReviewRecordRepository(BaseRepository):
         block_rate = (block_count / total_reviews * 100) if total_reviews > 0 else 0.0
 
         # 按分类切片：展开 categories JSON 数组后分组计数
-        category_expr = func.json_array_elements_text(ChannelContentReviewRecord.categories).label("category")
+        category_expr = func.jsonb_array_elements_text(ChannelContentReviewRecord.categories).label("category")
         category_stmt = (
             select(
                 category_expr,
@@ -405,7 +405,7 @@ class ChannelContentReviewRecordRepository(BaseRepository):
         manual_intervention_rate = (manual_count / total_reviews * 100) if total_reviews > 0 else 0.0
 
         # 按分类切片：展开 categories JSON 数组后分组计数
-        category_expr = func.json_array_elements_text(ChannelContentReviewRecord.categories).label("category")
+        category_expr = func.jsonb_array_elements_text(ChannelContentReviewRecord.categories).label("category")
         category_stmt = (
             select(
                 category_expr,