diff --git a/chat-client/src/views/chatweb/intelRetrieval/index.vue b/chat-client/src/views/chatweb/intelRetrieval/index.vue
index 61ab0e4..0383f81 100644
--- a/chat-client/src/views/chatweb/intelRetrieval/index.vue
+++ b/chat-client/src/views/chatweb/intelRetrieval/index.vue
@@ -16,8 +16,12 @@
               type="text"
               placeholder="请输入您要搜索的内容..."
               class="search-input"
+              maxlength="50"
               @keyup.enter="handleSearch"
             />
+            <div class="char-counter" v-if="searchQuery">
+              {{ searchQuery.length }}/50
+            </div>
             <button class="search-btn" @click="handleSearch" :disabled="loading">
               <svg v-if="!loading" class="search-icon" viewBox="0 0 24 24">
                 <path d="M15.5 14h-.79l-.28-.27C15.41 12.59 16 11.11 16 9.5 16 5.91 13.09 3 9.5 3S3 5.91 3 9.5 5.91 16 9.5 16c1.61 0 3.09-.59 4.23-1.57l.27.28v.79l5 4.99L20.49 19l-4.99-5zm-6 0C7.01 14 5 11.99 5 9.5S7.01 5 9.5 5 14 7.01 14 9.5 11.99 14 9.5 14z"/>
@@ -426,6 +430,11 @@ const handleSearch = async () => {
     return
   }
 
+  if (searchQuery.value.length > 50) {
+    ElMessage.warning('搜索内容不能超过50个字符')
+    return
+  }
+
   if (!searchMethod.value) {
     ElMessage.warning('请选择搜索方法')
     return
@@ -889,6 +898,22 @@ onMounted(() => {
   background: transparent;
 }
 
+.char-counter {
+  font-size: 12px;
+  color: #909399;
+  white-space: nowrap;
+  margin-right: 8px;
+  padding: 2px 6px;
+  background: rgba(0, 0, 0, 0.05);
+  border-radius: 10px;
+  font-family: monospace;
+  transition: all 0.2s ease;
+}
+
+.char-counter:hover {
+  background: rgba(0, 0, 0, 0.1);
+}
+
 .search-btn {
   background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
   border: none;
diff --git a/chat-client/src/views/datasets/components/DocumentList.vue b/chat-client/src/views/datasets/components/DocumentList.vue
index c2a3935..5328e32 100644
--- a/chat-client/src/views/datasets/components/DocumentList.vue
+++ b/chat-client/src/views/datasets/components/DocumentList.vue
@@ -812,10 +812,6 @@ const handleBatchDelete = async () => {
       }
     )
 
-    const handleClose = () => {
-      previewDrawerVisible.value = false,
-        segmentList.value = []
-    }
     const loading = ElLoading.service({
       lock: true,
       text: t('vabI18n.knowledge.document.messages.deleteing'),
@@ -842,6 +838,11 @@ const handleBatchDelete = async () => {
       loading.close()
     }
   } catch (error) {
+    // 检查是否是用户取消操作
+    if (error === 'cancel') {
+      // 用户取消删除，不显示错误信息
+      return
+    }
     console.error('批量删除失败:', error)
     ElNotification({
       title: t('vabI18n.knowledge.document.errors.deleteFailed'),
@@ -1292,6 +1293,11 @@ const handleDelete = async (row: FileItem) => {
     // 刷新文件列表
     await fetchDocuments()
   } catch (error) {
+    // 检查是否是用户取消操作
+    if (error === 'cancel') {
+      // 用户取消删除，不显示错误信息
+      return
+    }
     console.error('删除文件失败:', error)
     ElNotification({
       title: t('vabI18n.knowledge.document.errors.deleteFailed'),