diff --git a/lib/tabs/index.js b/lib/tabs/index.js
index c50204e5..02cb1033 100644
--- a/lib/tabs/index.js
+++ b/lib/tabs/index.js
@@ -10,9 +10,9 @@ component_1.VantComponent({
         name: 'tab',
         type: 'descendant',
         linked: function (target) {
-            target.index = this.children.length;
-            this.children.push(target);
+            this.children = this.getChildren();
             this.updateTabs();
+            this.setLine();
         },
         unlinked: function (target) {
             this.children = this.children
@@ -22,6 +22,7 @@ component_1.VantComponent({
                 return child;
             });
             this.updateTabs();
+            this.setLine();
         }
     },
     props: {
@@ -282,6 +283,14 @@ component_1.VantComponent({
                     this.setCurrentIndex(currentIndex + 1);
                 }
             }
+        },
+        getChildren: function () {
+          var nodes = this.getRelationNodes('../tab/index')
+          nodes.map((child, index) => {
+            child.index = index;
+            return child;
+          })
+          return nodes;
         }
     }
 });