diff --git a/frontend-web/src/components/assistant-ui/document-upload-popup.tsx b/frontend-web/src/components/assistant-ui/document-upload-popup.tsx
index a0afd6d5..78e314fe 100644
--- a/frontend-web/src/components/assistant-ui/document-upload-popup.tsx
+++ b/frontend-web/src/components/assistant-ui/document-upload-popup.tsx
@@ -405,8 +405,15 @@ const DocumentUploadPopupContent: FC<{
       if (response.ok) {
         const data = await response.json() as { imported_count?: number };
         toast.success(`成功导入 ${data.imported_count || dataList.length} 个来源`);
-        setListData([]);
-        handleBatchDelete();
+        onUploadComplete?.(
+          selectedSearchSources.map((s) => ({
+            id: undefined,
+            title: s.title,
+            task_id: undefined,
+            status: "success" as const,
+          }))
+        );
+        onOpenChange(false);
       } else {
         const errorData = await response.json() as { detail?: string };
         toast.error(errorData.detail || "导入失败，请重试");
diff --git a/frontend-web/src/pages/StudioNotebookDetailPage.tsx b/frontend-web/src/pages/StudioNotebookDetailPage.tsx
index bfb7ea8b..03134ff6 100644
--- a/frontend-web/src/pages/StudioNotebookDetailPage.tsx
+++ b/frontend-web/src/pages/StudioNotebookDetailPage.tsx
@@ -154,6 +154,7 @@ function SourcesDialog({
   isLoadingSources,
   selectedSourceIds,
   pendingSources,
+  pendingImportTitles,
   onToggle,
   onDelete,
 }: {
@@ -164,6 +165,7 @@ function SourcesDialog({
   isLoadingSources: boolean;
   selectedSourceIds: number[];
   pendingSources: Map<string, { id?: number; title: string }>;
+  pendingImportTitles: string[];
   onToggle: (id: number) => void;
   onDelete: (id: number) => void;
 }) {
@@ -216,6 +218,14 @@ function SourcesDialog({
                       .map(([taskId, s]) => (
                         <PendingSourceCard key={taskId} title={s.title} />
                       ))}
+                    {pendingImportTitles
+                      .filter((t) => !sources.some((src) => {
+                        const srcTitle = src.title ?? (src.document as { title?: string } | undefined)?.title ?? "";
+                        return srcTitle === t;
+                      }))
+                      .map((t) => (
+                        <PendingSourceCard key={`import-${t}`} title={t} />
+                      ))}
                     {sources.map((src) => (
                       <SourceCard
                         key={src.id}
@@ -269,6 +279,8 @@ export default function StudioNotebookDetailPage({
   // 轮询任务管理：task_id -> 来源信息
   const [pendingSources, setPendingSources] = useState<Map<string, { id?: number; title: string }>>(new Map());
   const pollingIntervalRef = useRef<ReturnType<typeof setInterval> | null>(null);
+  // 同步导入（搜索导入）的占位标题列表，sources 刷新后按标题匹配移除
+  const [pendingImportTitles, setPendingImportTitles] = useState<string[]>([]);
 
   useEffect(() => {
     if (!selectedModel && models.length > 0) {
@@ -287,20 +299,25 @@ export default function StudioNotebookDetailPage({
     }
   }, [sources, notebook?.id, initializedForNotebook]);
 
-  // sources 刷新后，将轮询成功的来源（按标题匹配）自动选中
+  // sources 刷新后，将轮询成功/同步导入的来源（按标题匹配）自动选中，并移除占位卡
   useEffect(() => {
-    if (pendingSelectTitlesRef.current.size === 0) return;
-    const matched = sources.filter((s) => {
-      const title = s.title ?? (s.document as { title?: string } | undefined)?.title ?? "";
-      return pendingSelectTitlesRef.current.has(title);
-    });
-    if (matched.length > 0) {
-      setSelectedSourceIds((prev) => [...new Set([...prev, ...matched.map((s) => s.id)])]);
-      matched.forEach((s) => {
-        const title = s.title ?? (s.document as { title?: string } | undefined)?.title ?? "";
-        pendingSelectTitlesRef.current.delete(title);
-      });
+    const getTitle = (s: SourceItem) =>
+      s.title ?? (s.document as { title?: string } | undefined)?.title ?? "";
+
+    if (pendingSelectTitlesRef.current.size > 0) {
+      const matched = sources.filter((s) => pendingSelectTitlesRef.current.has(getTitle(s)));
+      if (matched.length > 0) {
+        setSelectedSourceIds((prev) => [...new Set([...prev, ...matched.map((s) => s.id)])]);
+        matched.forEach((s) => pendingSelectTitlesRef.current.delete(getTitle(s)));
+      }
     }
+
+    setPendingImportTitles((prev) => {
+      if (prev.length === 0) return prev;
+      const sourceTitles = new Set(sources.map(getTitle));
+      const remaining = prev.filter((t) => !sourceTitles.has(t));
+      return remaining.length === prev.length ? prev : remaining;
+    });
   }, [sources]);
   const citationRehypePlugins = useMemo(() => {
     const mapped = sources.map((s) => ({
@@ -392,6 +409,12 @@ export default function StudioNotebookDetailPage({
         return newMap;
       });
     }
+    // 同步导入（status=success，无 task_id）：立刻显示占位卡 + 等 sources 刷新后自动选中
+    const syncTitles = uploadedSources.filter(s => s.status === 'success' && s.title).map(s => s.title);
+    if (syncTitles.length > 0) {
+      syncTitles.forEach(t => pendingSelectTitlesRef.current.add(t));
+      setPendingImportTitles(prev => [...new Set([...prev, ...syncTitles])]);
+    }
     // 刷新来源列表
     void queryClient.invalidateQueries({ queryKey: ["studio", "sources", notebook.id] });
     // 刷新 notebooks 数据以更新 source_count
@@ -854,6 +877,7 @@ export default function StudioNotebookDetailPage({
               isLoadingSources={isLoadingSources}
               selectedSourceIds={selectedSourceIds}
               pendingSources={pendingSources}
+              pendingImportTitles={pendingImportTitles}
               onToggle={handleToggleSource}
               onDelete={handleDeleteSource}
             />