diff --git a/track-uniapp/src/pages/scan/components/TreeCanvas.vue b/track-uniapp/src/pages/scan/components/TreeCanvas.vue
index 0f7b844..222ccde 100644
--- a/track-uniapp/src/pages/scan/components/TreeCanvas.vue
+++ b/track-uniapp/src/pages/scan/components/TreeCanvas.vue
@@ -108,19 +108,19 @@ export default {
     },
     branchLabelMap() {
       const map = {};
+      if (!this.product || !this.product.task_tree) return map;
       const traverse = (tasks, prefix) => {
         if (!tasks) return;
         tasks.forEach((t, i) => {
-          map[t.id] = prefix ? `分支 ${prefix}${i + 1}` : '分支 1';
-          traverse(t.child_tasks, prefix ? `${prefix}${i + 1}.` : `${i + 1}.`);
+          const num = prefix ? `${prefix}.${i + 1}` : `${i + 1}`;
+          map[t.id] = `分支 ${num}`;
+          traverse(t.child_tasks, num);
         });
       };
-      if (this.product && this.product.task_tree) {
-        this.product.task_tree.forEach((t, i) => {
-          map[t.id] = '主分支';
-          traverse(t.child_tasks, `${i + 1}.`);
-        });
-      }
+      this.product.task_tree.forEach((t, i) => {
+        map[t.id] = '主分支';
+        traverse(t.child_tasks, '');
+      });
       return map;
     },
     canvasWidth() { if (!this.treeNodes.length) return 400; return Math.max(800, Math.max(...this.treeNodes.map(n => n.x)) + 300); },
diff --git a/track-uniapp/src/pages/scan/components/WorkspaceArea.vue b/track-uniapp/src/pages/scan/components/WorkspaceArea.vue
index 53fabc4..8814978 100644
--- a/track-uniapp/src/pages/scan/components/WorkspaceArea.vue
+++ b/track-uniapp/src/pages/scan/components/WorkspaceArea.vue
@@ -143,16 +143,15 @@ export default {
       const traverse = (tasks, prefix) => {
         if (!tasks) return;
         tasks.forEach((t, i) => {
-          if (prefix === '') {
-            map[t.id] = '主分支';
-          } else {
-            map[t.id] = `分支 ${prefix}${i + 1}`;
-          }
-          const nextPrefix = prefix === '' ? `${i + 1}.` : `${prefix}${i + 1}.`;
-          traverse(t.child_tasks, nextPrefix);
+          const num = prefix ? `${prefix}.${i + 1}` : `${i + 1}`;
+          map[t.id] = `分支 ${num}`;
+          traverse(t.child_tasks, num);
         });
       };
-      traverse(this.product.task_tree, '');
+      this.product.task_tree.forEach((t, i) => {
+        map[t.id] = '主分支';
+        traverse(t.child_tasks, '');
+      });
       return map;
     },
   },