diff --git a/src/Entity.php b/src/Entity.php
index 637603b1..e0582095 100644
--- a/src/Entity.php
+++ b/src/Entity.php
@@ -778,6 +778,8 @@ public function save(array | object $data = [], $where = []): bool
             $this->relationSave($relations);
         }
 
+        // 重置原始数据
+        $this->setWeakMap('origin', $data);
         return true;
     }
 
@@ -798,7 +800,7 @@ protected function autoDateTime(array &$data, bool $update)
         foreach ($dateTimeFields as $field) {
             if (is_string($field)) {
                 $data[$field] = $this->getDateTime($field);
-                $this->$field = $this->readTransform($data[$field], $this->getFields($field));
+                $this->setData($field, $this->readTransform($data[$field], $this->getFields($field)));
             }
         }
     }
@@ -926,6 +928,7 @@ public function isSimple(): bool
     public function delete(): bool
     {
         if ($this->isVirtual() || $this->isView()) {
+            $this->clear();
             return true;
         }
 
@@ -948,6 +951,7 @@ public function delete(): bool
             $this->relationDelete($relations);
         }
 
+        $this->clear();
         return true;
     }
 
@@ -1099,6 +1103,20 @@ public function data(array $data)
         return $this;
     }
 
+    /**
+     * 清空模型数据.
+     *
+     * @return $this
+     */
+    public function clear()
+    {
+        self::$weakMap[$this]['data']     = [];
+        self::$weakMap[$this]['origin']   = [];
+        self::$weakMap[$this]['get']      = [];
+        self::$weakMap[$this]['relation'] = [];
+        return $this;
+    }
+
     /**
      * 获取原始数据.
      *