diff --git a/src/assets/icons/png/locked.png b/src/assets/icons/png/locked.png
new file mode 100644
index 0000000..97f6ee1
Binary files /dev/null and b/src/assets/icons/png/locked.png differ
diff --git a/src/services/draw/storage-location-drawer.ts b/src/services/draw/storage-location-drawer.ts
index 5cba3ec..307b28b 100644
--- a/src/services/draw/storage-location-drawer.ts
+++ b/src/services/draw/storage-location-drawer.ts
@@ -1,13 +1,10 @@
 import type { MapPen } from '@api/map';
 
-function roundedRectPath(
-  ctx: CanvasRenderingContext2D,
-  x: number,
-  y: number,
-  w: number,
-  h: number,
-  r: number,
-) {
+// 预加载锁定图标（仅一次）
+const lockedIcon = new Image();
+lockedIcon.src = new URL('../../assets/icons/png/locked.png', import.meta.url).toString();
+
+function roundedRectPath(ctx: CanvasRenderingContext2D, x: number, y: number, w: number, h: number, r: number) {
   const rr = Math.max(0, Math.min(r, Math.min(w, h) / 2));
   ctx.moveTo(x + rr, y);
   ctx.lineTo(x + w - rr, y);
@@ -27,7 +24,10 @@ function roundedRectPath(
 export function drawStorageGrid(
   ctx: CanvasRenderingContext2D,
   pen: MapPen,
-  opts?: { fontFamily?: string },
+  opts?: {
+    fontFamily?: string;
+    stateResolver?: (penId: string, layerName: string) => { occupied?: boolean; locked?: boolean } | undefined;
+  },
 ): void {
   const { x = 0, y = 0, width: w = 0, height: h = 0 } = pen.calculative?.worldRect ?? {};
   const assoc: string[] = pen.point?.associatedStorageLocations || [];
@@ -58,17 +58,41 @@ export function drawStorageGrid(
 
   // 前 5 个格子 + 最后一格可能显示 +N
   const slots = assoc.slice(0, gridCols * gridRows);
-  slots.forEach((_, i) => {
+  slots.forEach((layerName, i) => {
     const r = Math.floor(i / gridCols);
     const c = i % gridCols;
     const cx = gx + c * (cell + gap);
     const cy = gy + r * (cell + gap);
     ctx.beginPath();
     roundedRectPath(ctx, cx, cy, cell, cell, Math.min(4, cell * 0.3));
-    ctx.fillStyle = '#f5f5f5';
+    // 解析状态
+    const state = opts?.stateResolver?.(pen.id!, layerName) ?? {};
+
+    const occupied = !!state.occupied;
+    const locked = !!state.locked;
+
+    // 填充颜色：占用为红色，否则默认灰底
+    ctx.fillStyle = occupied ? '#ff4d4f' : '#f5f5f5';
     ctx.fill();
     ctx.strokeStyle = '#999999';
     ctx.stroke();
+
+    // 若锁定，绘制锁图标角标（尽量不阻塞：未加载完成则跳过）
+    if (locked && lockedIcon.complete && lockedIcon.naturalWidth > 0) {
+      const pad = Math.max(1, Math.floor(cell * 0.08));
+      // 图标尺寸不超过 cell 内可用空间，且有最小可见阈值
+      const maxIcon = Math.max(0, cell - 2 * pad);
+      const iconSize = Math.min(14, Math.floor(cell * 0.7), maxIcon);
+
+      // 将绘制范围裁剪到当前格子，确保不会溢出
+      ctx.save();
+      ctx.beginPath();
+      roundedRectPath(ctx, cx, cy, cell, cell, Math.min(4, cell * 0.3));
+      ctx.clip();
+      // 放在格子左上角
+      ctx.drawImage(lockedIcon, cx + pad, cy + pad, iconSize, iconSize);
+      ctx.restore();
+    }
   });
 
   const overflow = Math.max(0, assoc.length - gridCols * gridRows);
diff --git a/src/services/editor.service.ts b/src/services/editor.service.ts
index b5c951b..aadaf5b 100644
--- a/src/services/editor.service.ts
+++ b/src/services/editor.service.ts
@@ -32,6 +32,7 @@ import { reactive, watch } from 'vue';
 import { AreaOperationService } from './area-operation.service';
 import { drawStorageGrid } from './draw/storage-location-drawer';
 import { LayerManagerService } from './layer-manager.service';
+import { storageStateMap } from './storage-location.service';
 
 /**
  * 场景编辑器服务类
@@ -1547,7 +1548,18 @@ function drawPoint(ctx: CanvasRenderingContext2D, pen: MapPen): void {
 
   // 库位2x3栅格：动作点在画布上直接绘制（静态数据）
   if (type === MapPointType.动作点) {
-    drawStorageGrid(ctx, pen, { fontFamily });
+    drawStorageGrid(ctx, pen, {
+      fontFamily,
+      stateResolver: (penId: string, layerName: string) => {
+        const inner = storageStateMap.get(penId);
+        if (!inner) {
+          return {};
+        }
+        const state = inner.get(layerName);
+
+        return state ?? {};
+      },
+    });
   }
   ctx.restore();
 }
diff --git a/src/services/storage-location.service.ts b/src/services/storage-location.service.ts
index 9d282aa..53735f9 100644
--- a/src/services/storage-location.service.ts
+++ b/src/services/storage-location.service.ts
@@ -4,6 +4,10 @@ import type { EditorService } from '@core/editor.service';
 import { isNil } from 'lodash-es';
 import { type Ref, ref } from 'vue';
 
+// 提供给绘制层快速查询的全局状态映射：pointId -> (layerName -> { occupied, locked })
+export type StorageState = { occupied?: boolean; locked?: boolean };
+export const storageStateMap = new Map<string, Map<string, StorageState>>();
+
 /**
  * 库位处理服务类
  * 负责管理库位数据、WebSocket连接、状态更新和画布点颜色管理
@@ -13,12 +17,26 @@ export class StorageLocationService {
   private storageLocations: Ref<Map<string, StorageLocationInfo[]>> = ref(new Map());
   private editor: EditorService | null = null;
   private sceneId: string = '';
+  // 渲染调度标记，避免在高频事件中重复 render
+  private renderScheduled = false;
 
   constructor(editor: EditorService, sceneId: string) {
     this.editor = editor;
     this.sceneId = sceneId;
   }
 
+  /**
+   * 在下一帧合并渲染请求，避免频繁 render() 抖动
+   */
+  private scheduleRender() {
+    if (this.renderScheduled) return;
+    this.renderScheduled = true;
+    requestAnimationFrame(() => {
+      this.renderScheduled = false;
+      this.editor?.render();
+    });
+  }
+
   /**
    * 获取库位数据
    */
@@ -123,9 +141,9 @@ export class StorageLocationService {
       // 按画布点ID组织库位数据
       const locationsByPointId = new Map<string, StorageLocationInfo[]>();
       message.data.storage_locations.forEach((location) => {
-        const byOperateId = location.operate_point_id; // 直接对应动作点ID
-        const byStationName = stationToPointIdMap.get(location.station_name);
-        const pointId = byOperateId || byStationName;
+        const byStationName = stationToPointIdMap.get(location.station_name); // 优先使用画布上的 pen.id
+        const byOperateId = location.operate_point_id; // 后端UUID，仅作兜底
+        const pointId = byStationName || byOperateId;
 
         if (pointId) {
           if (!locationsByPointId.has(pointId)) {
@@ -137,8 +155,20 @@ export class StorageLocationService {
 
       this.storageLocations.value = locationsByPointId;
 
+      // 同步维护 storageStateMap
+      storageStateMap.clear();
+      for (const [pointId, list] of locationsByPointId.entries()) {
+        const inner = new Map<string, StorageState>();
+        list.forEach((loc) => {
+          inner.set(loc.layer_name, { occupied: loc.is_occupied, locked: loc.is_locked });
+        });
+        storageStateMap.set(pointId, inner);
+      }
+
       // 更新动作点的边框颜色
       this.updatePointBorderColors();
+      // 批量更新后触发一次重绘
+      this.scheduleRender();
     } else if (message.type === 'storage_location_status_change') {
       // 处理单个库位状态变化
       const { new_status } = message;
@@ -146,6 +176,28 @@ export class StorageLocationService {
       if (pointId) {
         this.updateStorageLocationInMap(pointId, new_status.id, new_status);
         this.updatePointBorderColor(pointId);
+
+        // 更新 storageStateMap 对应项
+        const inner = storageStateMap.get(pointId) ?? new Map<string, StorageState>();
+        // 兼容不同消息结构：优先消息顶层 layer_name，其次从缓存反查
+        let layerName: string | undefined;
+        const msgLoose = message as unknown as { layer_name?: string };
+        if (typeof msgLoose.layer_name === 'string') {
+          layerName = msgLoose.layer_name;
+        }
+        if (!layerName) {
+          const cached = this.storageLocations.value.get(pointId)?.find((loc) => loc.id === new_status.id);
+          layerName = cached?.layer_name;
+        }
+        if (layerName) {
+          inner.set(layerName, {
+            occupied: new_status.is_occupied,
+            locked: new_status.is_locked,
+          });
+          storageStateMap.set(pointId, inner);
+        }
+        // 单条状态更新后触发重绘
+        this.scheduleRender();
       }
     }
   }
@@ -165,8 +217,8 @@ export class StorageLocationService {
       try {
         const message = <StorageLocationMessage>JSON.parse(e.data || '{}');
         this.handleStorageLocationUpdate(message);
-      } catch (error) {
-        console.debug('处理库位状态消息失败:', error);
+      } catch {
+        // 忽略解析错误，避免打断消息循环
       }
     };