diff --git a/src/mixins/popup/index.js b/src/mixins/popup/index.js
index 4ecc1e418..388528bab 100644
--- a/src/mixins/popup/index.js
+++ b/src/mixins/popup/index.js
@@ -66,15 +66,14 @@ export default {
     /**
      * 显示popup
      */
-    open(options) {
+    open() {
       if (this.opened) return;
 
       this.opening = true;
 
       this.$emit('input', true);
 
-      const props = merge({}, this, options);
-      const zIndex = props.zIndex;
+      const zIndex = this.zIndex;
 
       // 如果属性中传入了`zIndex`，则覆盖`popupContext`中对应的`zIndex`
       if (zIndex) {
diff --git a/src/mixins/popup/popup-context.js b/src/mixins/popup/popup-context.js
index a4cccf692..66dae4ea2 100644
--- a/src/mixins/popup/popup-context.js
+++ b/src/mixins/popup/popup-context.js
@@ -25,7 +25,7 @@ const PopupContext = {
   },
 
   plusKeyByOne(key) {
-    const oldVal = context[key];
+    const oldVal = +context[key];
     context[key] = oldVal + 1;
 
     return oldVal;