diff --git a/library/think/Model.php b/library/think/Model.php
index d9354881..cc34c1fe 100644
--- a/library/think/Model.php
+++ b/library/think/Model.php
@@ -173,6 +173,11 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
                 case 'boolean':
                     $value = (bool) $value;
                     break;
+                case 'array':
+                    if (is_array($value)) {
+                        $value = json_encode($value, JSON_UNESCAPED_UNICODE);
+                    }
+                    break;
             }
         }
 
@@ -207,6 +212,9 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
                 case 'boolean':
                     $value = (bool) $value;
                     break;
+                case 'array':
+                    $value = json_decode($value, true);
+                    break;
             }
         }