diff --git a/src/components/LabCanvas/DiagramCanvas.vue b/src/components/LabCanvas/DiagramCanvas.vue
index 22b8340..ce1add1 100644
--- a/src/components/LabCanvas/DiagramCanvas.vue
+++ b/src/components/LabCanvas/DiagramCanvas.vue
@@ -187,7 +187,6 @@ import { useAlertStore } from "@/components/Alert";
 // 导入 diagram 管理器
 import {
   loadDiagramData,
-  saveDiagramData,
   updatePartPosition,
   updatePartAttribute,
   parseConnectionPin,
@@ -606,14 +605,13 @@ function onComponentDrag(e: MouseEvent) {
 
 // 停止拖拽组件
 function stopComponentDrag() {
-  // 如果有组件被拖拽，保存当前状态
+  // 如果有组件被拖拽，仅清除拖拽状态（不保存）
   if (draggingComponentId.value) {
     draggingComponentId.value = null;
   }
 
   isComponentDragEventActive.value = false;
-  
-  saveDiagramData(diagramData.value);
+  // 移除自动保存功能 - 不再自动保存到localStorage
 }
 
 // 更新组件属性
diff --git a/src/components/LabCanvas/composable/componentManager.ts b/src/components/LabCanvas/composable/componentManager.ts
index e93b901..be5cad1 100644
--- a/src/components/LabCanvas/composable/componentManager.ts
+++ b/src/components/LabCanvas/composable/componentManager.ts
@@ -1,7 +1,6 @@
 import { ref, shallowRef, computed, reactive } from "vue";
 import { createInjectionState } from "@vueuse/core";
 import {
-  saveDiagramData,
   type DiagramData,
   type DiagramPart,
 } from "./diagramManager";
@@ -302,7 +301,7 @@ const [useProvideComponentManager, useComponentManager] = createInjectionState(
 
         // 使用 updateDiagramDataDirectly 避免触发加载状态
         canvasInstance.updateDiagramDataDirectly(currentData);
-        saveDiagramData(currentData);
+        // 移除自动保存功能
 
         console.log("组件添加完成:", newComponent);
 
@@ -431,7 +430,7 @@ const [useProvideComponentManager, useComponentManager] = createInjectionState(
           "=== 更新图表数据完成，新组件数量:",
           currentData.parts.length,
         );
-        saveDiagramData(currentData);
+        // 移除自动保存功能
 
         return { success: true, message: `已添加 ${templateData.name} 模板` };
       } else {
@@ -504,7 +503,7 @@ const [useProvideComponentManager, useComponentManager] = createInjectionState(
 
       canvasInstance.updateDiagramDataDirectly(currentData);
 
-      saveDiagramData(currentData);
+      // 移除自动保存功能
     }
 
     /**
diff --git a/src/components/LabCanvas/composable/diagramManager.ts b/src/components/LabCanvas/composable/diagramManager.ts
index 1e60649..42d078e 100644
--- a/src/components/LabCanvas/composable/diagramManager.ts
+++ b/src/components/LabCanvas/composable/diagramManager.ts
@@ -121,19 +121,9 @@ export async function loadDiagramData(examId?: string): Promise<DiagramData> {
       }
     }
     
-    // 如果没有examId或API加载失败，尝试从本地存储加载
-    const savedData = localStorage.getItem('diagramData');
-    if (savedData) {
-      const data = JSON.parse(savedData);
-      const validation = validateDiagramData(data);
-      if (validation.isValid) {
-        return data;
-      } else {
-        console.warn('本地存储的diagram数据格式无效:', validation.errors);
-      }
-    }
+    // 如果没有examId或API加载失败，尝试从静态文件加载（不再使用本地存储）
     
-    // 如果本地存储也没有，从静态文件加载（作为最后的备选）
+    // 从静态文件加载（作为备选方案）
     const response = await fetch('/src/components/diagram.json');
     if (!response.ok) {
       throw new Error(`Failed to load diagram.json: ${response.statusText}`);
@@ -166,13 +156,10 @@ export function createEmptyDiagram(): DiagramData {
   };
 }
 
-// 保存图表数据到本地存储
+// 保存图表数据（已禁用本地存储）
 export function saveDiagramData(data: DiagramData): void {
-  try {
-    localStorage.setItem('diagramData', JSON.stringify(data));
-  } catch (error) {
-    console.error('Error saving diagram data:', error);
-  }
+  // 本地存储功能已禁用 - 不再保存到localStorage
+  console.debug('saveDiagramData called but localStorage saving is disabled');
 }
 
 // 更新组件位置