diff --git a/src/utils/index.js b/src/utils/index.js
index 22456861..613ae2a3 100644
--- a/src/utils/index.js
+++ b/src/utils/index.js
@@ -276,7 +276,14 @@ export function deepClone(source) {
   if (!source && typeof source !== 'object') {
     throw new Error('error arguments', 'shallowClone')
   }
-  const targetObj = source.constructor === Array ? Object.assign([], source) : Object.assign({}, source)
+  const targetObj = source.constructor === Array ? [] : {}
+  Object.keys(source).forEach(keys => {
+    if (source[keys] && typeof source[keys] === 'object') {
+      targetObj[keys] = deepClone(source[keys])
+    } else {
+      targetObj[keys] = source[keys]
+    }
+  })
   return targetObj
 }