diff --git a/track-uniapp/src/pages/scan/components/TreeCanvas.vue b/track-uniapp/src/pages/scan/components/TreeCanvas.vue
index 737bf77..7c0a1cd 100644
--- a/track-uniapp/src/pages/scan/components/TreeCanvas.vue
+++ b/track-uniapp/src/pages/scan/components/TreeCanvas.vue
@@ -225,12 +225,12 @@ export default {
 .tree-movable-area { flex: 1; width: 100%; background-color: #f0f2f5; background-image: linear-gradient(#dde1e6 1px, transparent 1px), linear-gradient(90deg, #dde1e6 1px, transparent 1px); background-size: 24px 24px; }
 .canvas-inner { position: absolute; left: 0; top: 0; }
 
-/* 🔧 连线 */
-.cn-line { position: absolute; height: 2px; }
+/* 🔧 连线（禁止吞事件） */
+.cn-line { position: absolute; height: 2px; pointer-events: none; }
 .cn-line-solid { background: #9ca3af; }
 .cn-line-dashed { background: repeating-linear-gradient(90deg, #fdba74 0, #fdba74 6px, transparent 6px, transparent 10px); }
-/* 🔧 连线箭头 */
-.cn-arrow { position: absolute; width: 0; height: 0; border-left: 6px solid #9ca3af; border-top: 4px solid transparent; border-bottom: 4px solid transparent; }
+/* 🔧 连线箭头（禁止吞事件） */
+.cn-arrow { position: absolute; width: 0; height: 0; border-left: 6px solid #9ca3af; border-top: 4px solid transparent; border-bottom: 4px solid transparent; pointer-events: none; }
 .cn-arrow-dashed { border-left-color: #fdba74; }
 
 /* 🔧 极简卡片 160x80 */