diff --git a/src/components/dialoguePanel/DialoguePanel.vue b/src/components/dialoguePanel/DialoguePanel.vue
index f45008b4bf56c3cb89d9a18ca539f1b1e83e4462..7a2aba3360417b6f5bc06c8ca83ec4d8eed0e9bd 100644
--- a/src/components/dialoguePanel/DialoguePanel.vue
+++ b/src/components/dialoguePanel/DialoguePanel.vue
@@ -123,7 +123,7 @@ const emits = defineEmits<{
   ): void;
   (e: 'clearSuggestion', index: number): void;
   (e: 'openShowFileSource', fileList: Array<any>): void;
-  (e: 'openDocumentPreview', fileList: Array<any>, markId: string): void;
+  (e: 'openDocumentPreview', fileList: Array<any>, markId: string, fileIndex: number): void;
 }>();
 
 const messageArray = ref<MessageArray[]>(props.messageArray || []);
@@ -256,9 +256,13 @@ const handleMarkNumberClick = (event: MouseEvent) => {
     event.stopPropagation();
     const clickedElement = event.target as HTMLElement;
     const markId = clickedElement.id;
-    // 触发openDocumentPreview事件，传递文件列表和被点击元素的ID
+    // 🔑 直接从DOM元素获取 data-mark-index 属性
+    const markIndexAttr = clickedElement.getAttribute('data-mark-index');
+    const fileIndex = markIndexAttr !== null ? parseInt(markIndexAttr, 10) : 0;
+    
+    // 触发openDocumentPreview事件，传递文件列表、被点击元素的ID和文件索引
     if (props.fileList && props.fileList.length > 0) {
-      emits('openDocumentPreview', props.fileList, markId);
+      emits('openDocumentPreview', props.fileList, markId, fileIndex);
     }
   }
 };
diff --git a/src/views/dialogue/components/DialogueSession.vue b/src/views/dialogue/components/DialogueSession.vue
index 8907f9333035f83d44328ba45e64640813abd066..cd63db8aa6abf7d1a8ebeee106e201ce1e767903 100644
--- a/src/views/dialogue/components/DialogueSession.vue
+++ b/src/views/dialogue/components/DialogueSession.vue
@@ -227,7 +227,7 @@ const handleSourceFileClick = (file: any) => {
 };
 
 // 🔑 打开文档预览panel（点击[[x]]引用标识）
-const openDocumentPreview = (fileList: Array<any>, markId: string) => {
+const openDocumentPreview = (fileList: Array<any>, markId: string, fileIndex?: number) => {
   showDocumentPreview.value = true;
   
   // 保存被点击的标识ID
@@ -255,19 +255,26 @@ const openDocumentPreview = (fileList: Array<any>, markId: string) => {
     
     previewFileList.value = formattedList;
     
-    // 🔑 修复：根据点击的标识索引选择对应的文件
-    // 从 DOM 元素中获取 data-mark-index 属性
-    const clickedElement = document.getElementById(markId);
+    // 🔑 修复：直接使用传入的索引，如果没有传入则尝试从DOM获取
     let targetIndex = 0; // 默认第一个
     
-    if (clickedElement) {
-      const markIndex = clickedElement.getAttribute('data-mark-index');
-      if (markIndex !== null) {
-        const index = parseInt(markIndex, 10);
-        if (!isNaN(index) && index >= 0 && index < formattedList.length) {
-          targetIndex = index;
+    if (fileIndex !== undefined && fileIndex >= 0 && fileIndex < formattedList.length) {
+      // 优先使用直接传入的索引
+      targetIndex = fileIndex;
+    } else {
+      // 兜底：尝试从DOM元素中获取 data-mark-index 属性
+      nextTick(() => {
+        const clickedElement = document.getElementById(markId);
+        if (clickedElement) {
+          const markIndex = clickedElement.getAttribute('data-mark-index');
+          if (markIndex !== null) {
+            const index = parseInt(markIndex, 10);
+            if (!isNaN(index) && index >= 0 && index < formattedList.length) {
+              selectedPreviewFile.value = formattedList[index];
+            }
+          }
         }
-      }
+      });
     }
     
     selectedPreviewFile.value = formattedList[targetIndex];