diff --git a/packages/utils/src/accessor.js b/packages/utils/src/accessor.js
index 7f7233a2db9..7d88bdeea7a 100644
--- a/packages/utils/src/accessor.js
+++ b/packages/utils/src/accessor.js
@@ -402,10 +402,10 @@ function _setIn(obj, path, value) {
 
   for (let i = 0; i < pathArr.length; i++) {
     const p = pathArr[i]
-
+    const next = pathArr[i + 1]
     if (!isObj(obj[p])) {
       if (obj[p] === undefined && value === undefined) return
-      obj[p] = {}
+      obj[p] = /^\d+$/.test(next) ? [] : {}
     }
 
     if (i === pathArr.length - 1) {