diff --git a/library/think/model/relation/BelongsTo.php b/library/think/model/relation/BelongsTo.php
index d0973614..cd5c04c0 100644
--- a/library/think/model/relation/BelongsTo.php
+++ b/library/think/model/relation/BelongsTo.php
@@ -130,7 +130,7 @@ class BelongsTo extends OneToOne
                     $relationModel = null;
                 } else {
                     $relationModel = $data[$result->$foreignKey];
-                    $relationModel->setParent($result);
+                    $relationModel->setParent(clone $result);
                     $relationModel->isUpdate(true);
                 }
 
@@ -163,7 +163,7 @@ class BelongsTo extends OneToOne
             $relationModel = null;
         } else {
             $relationModel = $data[$result->$foreignKey];
-            $relationModel->setParent($result);
+            $relationModel->setParent(clone $result);
             $relationModel->isUpdate(true);
         }
         if ($relationModel && !empty($this->bindAttr)) {
diff --git a/library/think/model/relation/HasMany.php b/library/think/model/relation/HasMany.php
index 3fc9f746..2f0d30b8 100644
--- a/library/think/model/relation/HasMany.php
+++ b/library/think/model/relation/HasMany.php
@@ -86,7 +86,7 @@ class HasMany extends Relation
                 }
 
                 foreach ($data[$result->$localKey] as &$relationModel) {
-                    $relationModel->setParent($result);
+                    $relationModel->setParent(clone $result);
                 }
 
                 $result->setAttr($attr, $this->resultSetBuild($data[$result->$localKey]));
@@ -115,7 +115,7 @@ class HasMany extends Relation
             }
 
             foreach ($data[$result->$localKey] as &$relationModel) {
-                $relationModel->setParent($result);
+                $relationModel->setParent(clone $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 a19d9a4b..27627627 100644
--- a/library/think/model/relation/HasOne.php
+++ b/library/think/model/relation/HasOne.php
@@ -132,7 +132,7 @@ class HasOne extends OneToOne
                     $relationModel = null;
                 } else {
                     $relationModel = $data[$result->$localKey];
-                    $relationModel->setParent($result);
+                    $relationModel->setParent(clone $result);
                     $relationModel->isUpdate(true);
                     if (!empty($this->bindAttr)) {
                         // 绑定关联属性
@@ -165,7 +165,7 @@ class HasOne extends OneToOne
             $relationModel = null;
         } else {
             $relationModel = $data[$result->$localKey];
-            $relationModel->setParent($result);
+            $relationModel->setParent(clone $result);
             $relationModel->isUpdate(true);
             if (!empty($this->bindAttr)) {
                 // 绑定关联属性
diff --git a/library/think/model/relation/MorphMany.php b/library/think/model/relation/MorphMany.php
index 7142314b..6b1ca7b3 100644
--- a/library/think/model/relation/MorphMany.php
+++ b/library/think/model/relation/MorphMany.php
@@ -120,7 +120,7 @@ class MorphMany extends Relation
                     $data[$result->$pk] = [];
                 }
                 foreach ($data[$result->$pk] as &$relationModel) {
-                    $relationModel->setParent($result);
+                    $relationModel->setParent(clone $result);
                     $relationModel->isUpdate(true);
                 }
                 $result->setAttr($attr, $this->resultSetBuild($data[$result->$pk]));
@@ -147,7 +147,7 @@ class MorphMany extends Relation
             ], $relation, $subRelation, $closure);
 
             foreach ($data[$result->$pk] as &$relationModel) {
-                $relationModel->setParent($result);
+                $relationModel->setParent(clone $result);
                 $relationModel->isUpdate(true);
             }
 
diff --git a/library/think/model/relation/MorphOne.php b/library/think/model/relation/MorphOne.php
index c2547c0a..b1e4c3d1 100644
--- a/library/think/model/relation/MorphOne.php
+++ b/library/think/model/relation/MorphOne.php
@@ -120,7 +120,7 @@ class MorphOne extends Relation
                     $relationModel = null;
                 } else {
                     $relationModel = $data[$result->$pk];
-                    $relationModel->setParent($result);
+                    $relationModel->setParent(clone $result);
                     $relationModel->isUpdate(true);
                 }
 
@@ -150,7 +150,7 @@ class MorphOne extends Relation
 
             if (isset($data[$pk])) {
                 $relationModel = $data[$pk];
-                $data[$pk]->setParent($result);
+                $data[$pk]->setParent(clone $result);
                 $relationModel->isUpdate(true);
             } else {
                 $relationModel = null;
diff --git a/library/think/model/relation/MorphTo.php b/library/think/model/relation/MorphTo.php
index 304186dc..c6a2211b 100644
--- a/library/think/model/relation/MorphTo.php
+++ b/library/think/model/relation/MorphTo.php
@@ -169,7 +169,7 @@ class MorphTo extends Relation
                             throw new Exception('relation data not exists :' . $this->model);
                         } else {
                             $relationModel = $data[$result->$morphKey];
-                            $relationModel->setParent($result);
+                            $relationModel->setParent(clone $result);
                             $relationModel->isUpdate(true);
 
                             $result->setAttr($attr, $relationModel);
@@ -224,7 +224,7 @@ class MorphTo extends Relation
         $pk   = $this->parent->{$this->morphKey};
         $data = (new $model)->with($subRelation)->find($pk);
         if ($data) {
-            $data->setParent($result);
+            $data->setParent(clone $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 7dc5e47e..4368618e 100644
--- a/library/think/model/relation/OneToOne.php
+++ b/library/think/model/relation/OneToOne.php
@@ -248,7 +248,7 @@ abstract class OneToOne extends Relation
 
         if (isset($list[$relation])) {
             $relationModel = new $model($list[$relation]);
-            $relationModel->setParent($result);
+            $relationModel->setParent(clone $result);
             $relationModel->isUpdate(true);
 
             if (!empty($this->bindAttr)) {