diff --git a/library/think/Model.php b/library/think/Model.php
index 1e6e32a8..e6d7661f 100644
--- a/library/think/Model.php
+++ b/library/think/Model.php
@@ -36,6 +36,8 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     protected static $links = [];
     // 数据库配置
     protected $connection = [];
+    // 父关联模型对象
+    protected $parent;
     // 数据库查询对象
     protected $query;
     // 当前模型名称
@@ -219,6 +221,29 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     {
     }
 
+    /**
+     * 设置父关联对象
+     * @access public
+     * @param Model $model  模型对象
+     * @return $this
+     */
+    public function setParent($model)
+    {
+        $this->parent = $model;
+
+        return $this;
+    }
+
+    /**
+     * 获取父关联对象
+     * @access public
+     * @return Model
+     */
+    public function getParent()
+    {
+        return $this->parent;
+    }
+
     /**
      * 设置数据对象值
      * @access public
@@ -458,10 +483,9 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
         } elseif ($notFound) {
             $method = Loader::parseName($name, 1, false);
             if (method_exists($this, $method) && $this->$method() instanceof Relation) {
-                // 清空之前的查询参数
-                $this->$method()->removeOption();
+                $modelRelation = $this->$method();
                 // 不存在该字段 获取关联数据
-                $value = $this->$method()->getRelation();
+                $value = $this->getRelationData($modelRelation);
                 // 保存关联对象值
                 $this->data[$name] = $value;
             } else {
@@ -471,6 +495,24 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
         return $value;
     }
 
+    /**
+     * 获取关联模型数据
+     * @access public
+     * @param mixed        $value 值
+     * @param string|array $type  要转换的类型
+     * @return mixed
+     */
+    protected function getRelationData($modelRelation)
+    {
+        if ($this->parent && get_class($this->parent) == $modelRelation->getModel()) {
+            $value = $this->parent;
+        } else {
+            // 首先获取关联数据
+            $value = $modelRelation->removeOption()->getRelation();
+        }
+        return $value;
+    }
+
     /**
      * 数据读取 类型转换
      * @access public
diff --git a/library/think/model/relation/BelongsTo.php b/library/think/model/relation/BelongsTo.php
index f693ef6d..d0973614 100644
--- a/library/think/model/relation/BelongsTo.php
+++ b/library/think/model/relation/BelongsTo.php
@@ -130,6 +130,8 @@ class BelongsTo extends OneToOne
                     $relationModel = null;
                 } else {
                     $relationModel = $data[$result->$foreignKey];
+                    $relationModel->setParent($result);
+                    $relationModel->isUpdate(true);
                 }
 
                 if ($relationModel && !empty($this->bindAttr)) {
@@ -161,6 +163,8 @@ class BelongsTo extends OneToOne
             $relationModel = null;
         } else {
             $relationModel = $data[$result->$foreignKey];
+            $relationModel->setParent($result);
+            $relationModel->isUpdate(true);
         }
         if ($relationModel && !empty($this->bindAttr)) {
             // 绑定关联属性
diff --git a/library/think/model/relation/HasMany.php b/library/think/model/relation/HasMany.php
index 4c045494..3fc9f746 100644
--- a/library/think/model/relation/HasMany.php
+++ b/library/think/model/relation/HasMany.php
@@ -84,6 +84,11 @@ class HasMany extends Relation
                 if (!isset($data[$result->$localKey])) {
                     $data[$result->$localKey] = [];
                 }
+
+                foreach ($data[$result->$localKey] as &$relationModel) {
+                    $relationModel->setParent($result);
+                }
+
                 $result->setAttr($attr, $this->resultSetBuild($data[$result->$localKey]));
             }
         }
@@ -108,6 +113,11 @@ class HasMany extends Relation
             if (!isset($data[$result->$localKey])) {
                 $data[$result->$localKey] = [];
             }
+
+            foreach ($data[$result->$localKey] as &$relationModel) {
+                $relationModel->setParent($result);
+            }
+
             $result->setAttr(Loader::parseName($relation), $this->resultSetBuild($data[$result->$localKey]));
         }
     }
diff --git a/library/think/model/relation/HasOne.php b/library/think/model/relation/HasOne.php
index 95a401bf..a19d9a4b 100644
--- a/library/think/model/relation/HasOne.php
+++ b/library/think/model/relation/HasOne.php
@@ -132,10 +132,12 @@ class HasOne extends OneToOne
                     $relationModel = null;
                 } else {
                     $relationModel = $data[$result->$localKey];
-                }
-                if ($relationModel && !empty($this->bindAttr)) {
-                    // 绑定关联属性
-                    $this->bindAttr($relationModel, $result, $this->bindAttr);
+                    $relationModel->setParent($result);
+                    $relationModel->isUpdate(true);
+                    if (!empty($this->bindAttr)) {
+                        // 绑定关联属性
+                        $this->bindAttr($relationModel, $result, $this->bindAttr);
+                    }
                 }
                 // 设置关联属性
                 $result->setAttr($attr, $relationModel);
@@ -163,12 +165,14 @@ class HasOne extends OneToOne
             $relationModel = null;
         } else {
             $relationModel = $data[$result->$localKey];
+            $relationModel->setParent($result);
+            $relationModel->isUpdate(true);
+            if (!empty($this->bindAttr)) {
+                // 绑定关联属性
+                $this->bindAttr($relationModel, $result, $this->bindAttr);
+            }
         }
 
-        if ($relationModel && !empty($this->bindAttr)) {
-            // 绑定关联属性
-            $this->bindAttr($relationModel, $result, $this->bindAttr);
-        }
         $result->setAttr(Loader::parseName($relation), $relationModel);
     }
 
diff --git a/library/think/model/relation/MorphMany.php b/library/think/model/relation/MorphMany.php
index 964d3d3a..7142314b 100644
--- a/library/think/model/relation/MorphMany.php
+++ b/library/think/model/relation/MorphMany.php
@@ -119,6 +119,10 @@ class MorphMany extends Relation
                 if (!isset($data[$result->$pk])) {
                     $data[$result->$pk] = [];
                 }
+                foreach ($data[$result->$pk] as &$relationModel) {
+                    $relationModel->setParent($result);
+                    $relationModel->isUpdate(true);
+                }
                 $result->setAttr($attr, $this->resultSetBuild($data[$result->$pk]));
             }
         }
@@ -141,6 +145,12 @@ class MorphMany extends Relation
                 $this->morphKey  => $result->$pk,
                 $this->morphType => $this->type,
             ], $relation, $subRelation, $closure);
+
+            foreach ($data[$result->$pk] as &$relationModel) {
+                $relationModel->setParent($result);
+                $relationModel->isUpdate(true);
+            }
+
             $result->setAttr(Loader::parseName($relation), $this->resultSetBuild($data[$result->$pk]));
         }
     }
diff --git a/library/think/model/relation/MorphOne.php b/library/think/model/relation/MorphOne.php
index 1bcc7710..c2547c0a 100644
--- a/library/think/model/relation/MorphOne.php
+++ b/library/think/model/relation/MorphOne.php
@@ -117,9 +117,14 @@ class MorphOne extends Relation
             // 关联数据封装
             foreach ($resultSet as $result) {
                 if (!isset($data[$result->$pk])) {
-                    $data[$result->$pk] = [];
+                    $relationModel = null;
+                } else {
+                    $relationModel = $data[$result->$pk];
+                    $relationModel->setParent($result);
+                    $relationModel->isUpdate(true);
                 }
-                $result->setAttr($attr, $this->resultSetBuild($data[$result->$pk]));
+
+                $result->setAttr($attr, $relationModel);
             }
         }
     }
@@ -137,11 +142,21 @@ class MorphOne extends Relation
     {
         $pk = $result->getPk();
         if (isset($result->$pk)) {
+            $pk   = $result->$pk;
             $data = $this->eagerlyMorphToOne([
-                $this->morphKey  => $result->$pk,
+                $this->morphKey  => $pk,
                 $this->morphType => $this->type,
             ], $relation, $subRelation, $closure);
-            $result->setAttr(Loader::parseName($relation), $this->resultSetBuild($data[$result->$pk]));
+
+            if (isset($data[$pk])) {
+                $relationModel = $data[$pk];
+                $data[$pk]->setParent($result);
+                $relationModel->isUpdate(true);
+            } else {
+                $relationModel = null;
+            }
+
+            $result->setAttr(Loader::parseName($relation), $relationModel);
         }
     }
 
diff --git a/library/think/model/relation/MorphTo.php b/library/think/model/relation/MorphTo.php
index 9c020b85..304186dc 100644
--- a/library/think/model/relation/MorphTo.php
+++ b/library/think/model/relation/MorphTo.php
@@ -168,7 +168,11 @@ class MorphTo extends Relation
                         if (!isset($data[$result->$morphKey])) {
                             throw new Exception('relation data not exists :' . $this->model);
                         } else {
-                            $result->setAttr($attr, $data[$result->$morphKey]);
+                            $relationModel = $data[$result->$morphKey];
+                            $relationModel->setParent($result);
+                            $relationModel->isUpdate(true);
+
+                            $result->setAttr($attr, $relationModel);
                         }
                     }
                 }
@@ -220,6 +224,7 @@ class MorphTo extends Relation
         $pk   = $this->parent->{$this->morphKey};
         $data = (new $model)->with($subRelation)->find($pk);
         if ($data) {
+            $data->setParent($result);
             $data->isUpdate(true);
         }
         $result->setAttr(Loader::parseName($relation), $data ?: null);
diff --git a/library/think/model/relation/OneToOne.php b/library/think/model/relation/OneToOne.php
index b0cf931d..7dc5e47e 100644
--- a/library/think/model/relation/OneToOne.php
+++ b/library/think/model/relation/OneToOne.php
@@ -245,13 +245,19 @@ abstract class OneToOne extends Relation
                 }
             }
         }
+
         if (isset($list[$relation])) {
             $relationModel = new $model($list[$relation]);
+            $relationModel->setParent($result);
+            $relationModel->isUpdate(true);
+
             if (!empty($this->bindAttr)) {
                 $this->bindAttr($relationModel, $result, $this->bindAttr);
             }
+        } else {
+            $relationModel = null;
         }
-        $result->setAttr(Loader::parseName($relation), !isset($relationModel) ? null : $relationModel->isUpdate(true));
+        $result->setAttr(Loader::parseName($relation), $relationModel);
     }
 
     /**