diff --git a/types/array.js b/types/array.js
index 17c9a27..11a5060 100644
--- a/types/array.js
+++ b/types/array.js
@@ -61,20 +61,22 @@ class TypeArray extends Base {
     if (this._min !== null && value.length < this._min) return `value length < ${this._min}`
     if (this._max !== null && value.length > this._max) return `value length > ${this._max}`
 
-    for (const item of value) {
-      let verified = false
-      let fail = ''
-      for (const type of this._itemTypes) {
-        const result = type.validate(item)
-        if (result) {
-          fail = result
-        } else {
-          verified = true
-          fail = ''
-          break
+    if (this._itemTypes.length > 0) {
+      for (const item of value) {
+        let verified = false
+        let fail = ''
+        for (const type of this._itemTypes) {
+          const result = type.validate(item)
+          if (result) {
+            fail = result
+          } else {
+            verified = true
+            fail = ''
+            break
+          }
         }
+        if (!verified || fail) return fail || `item type not match`
       }
-      if (!verified || fail) return fail || `item type not match`
     }
 
     return null