diff --git a/frontend/src/components/InlineVisualizationCard.tsx b/frontend/src/components/InlineVisualizationCard.tsx
index 5031178..01f7c83 100644
--- a/frontend/src/components/InlineVisualizationCard.tsx
+++ b/frontend/src/components/InlineVisualizationCard.tsx
@@ -1,11 +1,11 @@
 import { useState } from "react";
 import { Button } from "@/components/ui/button";
 import { Card, CardContent, CardHeader, CardTitle, CardDescription } from "@/components/ui/card";
-import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogTrigger, DialogDescription } from "@/components/ui/dialog";
+import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogTrigger, DialogDescription, DialogFooter } from "@/components/ui/dialog";
 import { Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from "@/components/ui/table";
 import { Code, Table as TableIcon, BarChart as ChartIcon, LayoutDashboard } from "lucide-react";
 import { ScrollArea } from "@/components/ui/scroll-area";
-import { useDashboardStore } from "@/store/dashboardStore";
+import { useDashboardStore, type ChartConfig } from "@/store/dashboardStore";
 import type { ChartSpec } from "@/store/visualizationStore";
 import { VegaChart } from "./VegaChart";
 
@@ -22,22 +22,37 @@ interface InlineVisualizationCardProps {
 
 export function InlineVisualizationCard({ viz }: InlineVisualizationCardProps) {
   const [view, setView] = useState<'table' | 'chart'>('chart');
+  const [confirmOpen, setConfirmOpen] = useState(false);
+  const [pendingChart, setPendingChart] = useState<Omit<ChartConfig, 'layout'> | null>(null);
   const { addChart } = useDashboardStore();
   const objectRows = viz.rows.filter((row) => row && typeof row === "object" && !Array.isArray(row)) as Record<string, unknown>[];
   const columns = objectRows.length > 0 ? Object.keys(objectRows[0]) : [];
 
-  const handleAddToDashboard = () => {
+  const buildPendingChart = (): Omit<ChartConfig, 'layout'> => {
     const mark = viz.chartSpec?.mark;
     const markType = typeof mark === "string" ? mark : mark?.type;
     const dashboardType = markType === "line" ? "line" : "bar";
-    addChart({
+    return {
       id: Date.now().toString(),
       title: viz.chartSpec?.title || "Generated Analysis",
       type: dashboardType,
       data: objectRows,
       sql: viz.sql,
       chartSpec: viz.chartSpec,
-    });
+    };
+  };
+
+  const handleAddToDashboard = () => {
+    const chart = buildPendingChart();
+    setPendingChart(chart);
+    setConfirmOpen(true);
+  };
+
+  const handleConfirmAdd = () => {
+    if (!pendingChart) return;
+    addChart(pendingChart);
+    setConfirmOpen(false);
+    setPendingChart(null);
   };
 
   if (viz.error) {
@@ -128,6 +143,30 @@ export function InlineVisualizationCard({ viz }: InlineVisualizationCardProps) {
           <div className="text-sm text-zinc-500">当前结果没有可渲染的结构化数据。</div>
         )}
       </CardContent>
+      <Dialog open={confirmOpen} onOpenChange={setConfirmOpen}>
+        <DialogContent className="sm:max-w-md">
+          <DialogHeader>
+            <DialogTitle>确认加入 Dashboard</DialogTitle>
+            <DialogDescription>
+              将当前图表添加到 Dashboard，是否继续？
+            </DialogDescription>
+          </DialogHeader>
+          <DialogFooter>
+            <Button
+              variant="outline"
+              onClick={() => {
+                setConfirmOpen(false);
+                setPendingChart(null);
+              }}
+            >
+              取消
+            </Button>
+            <Button onClick={handleConfirmAdd}>
+              确认添加
+            </Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
     </Card>
   );
 }
diff --git a/frontend/src/components/VisualizationPanel.tsx b/frontend/src/components/VisualizationPanel.tsx
index 0344200..3e746a3 100644
--- a/frontend/src/components/VisualizationPanel.tsx
+++ b/frontend/src/components/VisualizationPanel.tsx
@@ -1,33 +1,48 @@
 import { useState } from "react";
 import { Button } from "@/components/ui/button";
 import { Card, CardContent, CardHeader, CardTitle, CardDescription } from "@/components/ui/card";
-import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogTrigger, DialogDescription } from "@/components/ui/dialog";
+import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogTrigger, DialogDescription, DialogFooter } from "@/components/ui/dialog";
 import { Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from "@/components/ui/table";
 import { Code, Table as TableIcon, BarChart as ChartIcon, Download, LayoutDashboard, Loader2 } from "lucide-react";
 import { ScrollArea } from "@/components/ui/scroll-area";
-import { useDashboardStore } from "@/store/dashboardStore";
+import { useDashboardStore, type ChartConfig } from "@/store/dashboardStore";
 import { useVisualizationStore } from "@/store/visualizationStore";
 import { VegaChart } from "./VegaChart";
 
 export function VisualizationPanel() {
   const [view, setView] = useState<'table' | 'chart'>('chart');
+  const [confirmOpen, setConfirmOpen] = useState(false);
+  const [pendingChart, setPendingChart] = useState<Omit<ChartConfig, 'layout'> | null>(null);
   const { addChart } = useDashboardStore();
   const { currentData, currentSQL, currentChartSpec, currentChartInfo, isLoading, error } = useVisualizationStore();
 
-  const handleAddToDashboard = () => {
-    if (!currentData || !currentSQL) return;
+  const buildPendingChart = (): Omit<ChartConfig, 'layout'> | null => {
+    if (!currentData || !currentSQL) return null;
     const mark = currentChartSpec?.mark;
     const markType = typeof mark === "string" ? mark : mark?.type;
     const dashboardType = markType === "line" ? "line" : "bar";
-    addChart({
+    return {
       id: Date.now().toString(),
       title: currentChartSpec?.title || 'Generated Analysis',
       type: dashboardType,
       data: currentData,
       sql: currentSQL,
       chartSpec: currentChartSpec,
-    });
-    alert("Added to Dashboard!");
+    };
+  };
+
+  const handleAddToDashboard = () => {
+    const chart = buildPendingChart();
+    if (!chart) return;
+    setPendingChart(chart);
+    setConfirmOpen(true);
+  };
+
+  const handleConfirmAdd = () => {
+    if (!pendingChart) return;
+    addChart(pendingChart);
+    setConfirmOpen(false);
+    setPendingChart(null);
   };
 
   if (isLoading) {
@@ -175,6 +190,28 @@ export function VisualizationPanel() {
           </CardContent>
         </Card>
       </div>
+      <Dialog open={confirmOpen} onOpenChange={setConfirmOpen}>
+        <DialogContent className="sm:max-w-md">
+          <DialogHeader>
+            <DialogTitle>确认加入 Dashboard</DialogTitle>
+            <DialogDescription>
+              将当前图表添加到 Dashboard，是否继续？
+            </DialogDescription>
+          </DialogHeader>
+          <DialogFooter>
+            <Button
+              variant="outline"
+              onClick={() => {
+                setConfirmOpen(false);
+                setPendingChart(null);
+              }}
+            >
+              取消
+            </Button>
+            <Button onClick={handleConfirmAdd}>确认添加</Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
     </div>
   );
 }
diff --git a/frontend/src/store/dashboardStore.ts b/frontend/src/store/dashboardStore.ts
index 06901fe..84ccf17 100644
--- a/frontend/src/store/dashboardStore.ts
+++ b/frontend/src/store/dashboardStore.ts
@@ -21,25 +21,67 @@ interface DashboardState {
   updateLayout: (layouts: GridLayout[]) => void;
 }
 
+const DASHBOARD_STORAGE_KEY = 'dashboard_charts_v1';
+
+function loadChartsFromStorage(): ChartConfig[] {
+  if (typeof window === 'undefined') return [];
+  try {
+    const raw = window.localStorage.getItem(DASHBOARD_STORAGE_KEY);
+    if (!raw) return [];
+    const parsed = JSON.parse(raw);
+    if (!Array.isArray(parsed)) return [];
+    return parsed
+      .filter((item): item is ChartConfig => Boolean(item?.id && item?.layout))
+      .map((item) => ({
+        ...item,
+        layout: {
+          i: item.layout.i,
+          x: Number.isFinite(item.layout.x) ? item.layout.x : 0,
+          y: Number.isFinite(item.layout.y) ? item.layout.y : 0,
+          w: Number.isFinite(item.layout.w) ? item.layout.w : 4,
+          h: Number.isFinite(item.layout.h) ? item.layout.h : 4,
+        },
+      }));
+  } catch {
+    return [];
+  }
+}
+
+function saveChartsToStorage(charts: ChartConfig[]) {
+  if (typeof window === 'undefined') return;
+  window.localStorage.setItem(DASHBOARD_STORAGE_KEY, JSON.stringify(charts));
+}
+
 export const useDashboardStore = create<DashboardState>((set) => ({
-  charts: [],
+  charts: loadChartsFromStorage(),
   addChart: (chart) => set((state) => {
+    const colSize = 4;
+    const cols = 12 / colSize;
+    const index = state.charts.length;
     const newLayout: GridLayout = {
       i: chart.id,
-      x: (state.charts.length * 4) % 12,
-      y: Infinity,
-      w: 4,
+      x: (index % cols) * colSize,
+      y: Math.floor(index / cols) * 4,
+      w: colSize,
       h: 4,
     };
-    return { charts: [...state.charts, { ...chart, layout: newLayout }] };
+    const nextCharts = [...state.charts, { ...chart, layout: newLayout }];
+    saveChartsToStorage(nextCharts);
+    return { charts: nextCharts };
   }),
   removeChart: (id) => set((state) => ({
-    charts: state.charts.filter((c) => c.id !== id),
+    charts: (() => {
+      const nextCharts = state.charts.filter((c) => c.id !== id);
+      saveChartsToStorage(nextCharts);
+      return nextCharts;
+    })(),
   })),
-  updateLayout: (layouts) => set((state) => ({
-    charts: state.charts.map((chart) => {
+  updateLayout: (layouts) => set((state) => {
+    const nextCharts = state.charts.map((chart) => {
       const layout = layouts.find((l) => l.i === chart.id);
       return layout ? { ...chart, layout } : chart;
-    }),
-  })),
+    });
+    saveChartsToStorage(nextCharts);
+    return { charts: nextCharts };
+  }),
 }));