diff --git a/packages/taro-alipay/src/create-component.js b/packages/taro-alipay/src/create-component.js
index bca40d90f1d1..8601c28e8593 100644
--- a/packages/taro-alipay/src/create-component.js
+++ b/packages/taro-alipay/src/create-component.js
@@ -95,7 +95,7 @@ function processEvent (eventHandlerName, obj) {
         keyLower = keyLower.replace(/^on/, '').toLocaleLowerCase()
         if (keyLower.indexOf(eventType) >= 0) {
           const argName = keyLower.replace(eventType, '')
-          if (/^([a-z]|so)$/.test(argName)) {
+          if (/^(a[a-z]|so)$/.test(argName)) {
             bindArgs[argName] = dataset[key]
           }
         }
diff --git a/packages/taro-swan/src/create-component.js b/packages/taro-swan/src/create-component.js
index edc5909baf80..4e29a2605b19 100644
--- a/packages/taro-swan/src/create-component.js
+++ b/packages/taro-swan/src/create-component.js
@@ -94,7 +94,7 @@ function processEvent (eventHandlerName, obj) {
         keyLower = keyLower.replace(/^e/, '')
         if (keyLower.indexOf(eventType) >= 0) {
           const argName = keyLower.replace(eventType, '')
-          if (/^([a-z]|so)$/.test(argName)) {
+          if (/^(a[a-z]|so)$/.test(argName)) {
             bindArgs[argName] = dataset[key]
           }
         }
diff --git a/packages/taro-tt/src/create-component.js b/packages/taro-tt/src/create-component.js
index ecf8211aedc8..4d51e7b44e92 100644
--- a/packages/taro-tt/src/create-component.js
+++ b/packages/taro-tt/src/create-component.js
@@ -97,7 +97,7 @@ function processEvent (eventHandlerName, obj) {
         keyLower = keyLower.replace(/^e/, '')
         if (keyLower.indexOf(eventType) >= 0) {
           const argName = keyLower.replace(eventType, '')
-          if (/^([a-z]|so)$/.test(argName)) {
+          if (/^(a[a-z]|so)$/.test(argName)) {
             bindArgs[argName] = dataset[key]
           }
         }
diff --git a/packages/taro-weapp/src/create-component.js b/packages/taro-weapp/src/create-component.js
index 29d8a9e978cf..edaacaa3c1e6 100644
--- a/packages/taro-weapp/src/create-component.js
+++ b/packages/taro-weapp/src/create-component.js
@@ -126,7 +126,7 @@ function processEvent (eventHandlerName, obj) {
         keyLower = keyLower.replace(/^e/, '')
         if (keyLower.indexOf(eventType) >= 0) {
           const argName = keyLower.replace(eventType, '')
-          if (/^([a-z]|so)$/.test(argName)) {
+          if (/^(a[a-z]|so)$/.test(argName)) {
             bindArgs[argName] = dataset[key]
           }
         }