diff --git a/app/Http/Controllers/Admin/EntityController.php b/app/Http/Controllers/Admin/EntityController.php
index 52b63e7199446cf2bf83feb9bf71c54ec7d0c249..a44c06152e377a16bc3896201482f578dc561fa1 100644
--- a/app/Http/Controllers/Admin/EntityController.php
+++ b/app/Http/Controllers/Admin/EntityController.php
@@ -73,7 +73,8 @@ class EntityController extends Controller
     public function save(EntityRequest $request)
     {
         try {
-            EntityRepository::add($request->only($this->formNames));
+            $createDB = $request->post('is_modify_db', false);
+            EntityRepository::add($request->only($this->formNames), $createDB);
             return [
                 'code' => 0,
                 'msg' => '新增成功',
diff --git a/app/Http/Controllers/Admin/EntityFieldController.php b/app/Http/Controllers/Admin/EntityFieldController.php
index a97e086ea9dc45eac6f366ad7a51b3e902eb8ecc..eae601bf55e9d438453df641881637af1bc51a82 100644
--- a/app/Http/Controllers/Admin/EntityFieldController.php
+++ b/app/Http/Controllers/Admin/EntityFieldController.php
@@ -25,7 +25,7 @@ class EntityFieldController extends Controller
     protected $formNames = [
         'name', 'type', 'comment', 'form_name', 'form_type', 'is_show', 'is_edit', 'is_required',
         'form_comment', 'entity_id', 'field_length', 'field_total', 'field_scale', 'order', 'form_params',
-        'default_value', 'is_show_inline', 'is_modify_db'
+        'default_value', 'is_show_inline'
     ];
 
     public function __construct()
@@ -108,7 +108,8 @@ class EntityFieldController extends Controller
                 ];
             }
 
-            if (isset($data['is_modify_db'])) {
+            $modifyDB = $request->post('is_modify_db', false);
+            if ($modifyDB) {
                 Schema::table($table->table_name, function (Blueprint $table) use ($data) {
                     $m = $data['type'];
                     $length = intval($data['field_length']);
@@ -138,7 +139,7 @@ class EntityFieldController extends Controller
                 });
             }
 
-            unset($data['field_length'], $data['field_total'], $data['field_scale'], $data['is_modify_db']);
+            unset($data['field_length'], $data['field_total'], $data['field_scale']);
             EntityFieldRepository::add($data);
 
             return [
diff --git a/app/Repository/Admin/EntityRepository.php b/app/Repository/Admin/EntityRepository.php
index 33df35c075e25ee88ee8df04f6fc099e766fd0b8..448e54d6177b393197e65e8620f81c174b756543 100644
--- a/app/Repository/Admin/EntityRepository.php
+++ b/app/Repository/Admin/EntityRepository.php
@@ -43,11 +43,20 @@ class EntityRepository
 
     /**
      * 新增模型
+     *
+     * @param array $data
+     * @param mixed $createDB
+     * @throws CreateTableException|\Exception
+     * @return Entity
      */
-    public static function add($data)
+    public static function add($data, $createDB = true)
     {
         $entity = Entity::query()->create($data);
         try {
+            if (!$createDB) {
+                return $entity;
+            }
+
             if (Schema::hasTable($data['table_name'])) {
                 throw new \RuntimeException("数据库表已存在");
             }
diff --git a/resources/views/admin/entity/add.blade.php b/resources/views/admin/entity/add.blade.php
index 7f0a22b71e5e16170058d1e49bfbbe0dd3902920..bf539c88a44818270093c2db53098dfdce5f9cff 100644
--- a/resources/views/admin/entity/add.blade.php
+++ b/resources/views/admin/entity/add.blade.php
@@ -20,6 +20,15 @@
                             <input type="text" name="table_name" required  lay-verify="required" autocomplete="off" class="layui-input" value="{{ $model->table_name ?? ''  }}" placeholder="模型对应的数据库表名称，保存后不能修改" @isset($model->table_name) disabled @endisset>
                         </div>
                     </div>
+                    @if(!isset($id))
+                    <div class="layui-form-item">
+                        <label class="layui-form-label">新建数据库表</label>
+                        <div class="layui-input-inline" style="width: 50px;">
+                            <input type="checkbox" name="is_modify_db" lay-skin="switch" lay-text="是|否" value="1" checked>
+                        </div>
+                        <div class="layui-form-mid layui-word-aux">某些情况下可能数据库表已经通过其它方式建好，此处无需新建数据库表，添加模型主要是方便利用框架提供的模型增删改查功能</div>
+                    </div>
+                    @endif
                     <div class="layui-form-item">
                         <label class="layui-form-label">描述</label>
                         <div class="layui-input-block">
diff --git a/resources/views/admin/entityField/add.blade.php b/resources/views/admin/entityField/add.blade.php
index cc32d8427bce45d8122f2f62aa6ccef7a3c9d59c..92d41ce45a92dc7624115bafa1c9378a6d5fa5e1 100644
--- a/resources/views/admin/entityField/add.blade.php
+++ b/resources/views/admin/entityField/add.blade.php
@@ -55,6 +55,7 @@
                             <input type="text" name="comment" autocomplete="off" class="layui-input" value="{{ $model->comment ?? ''  }}">
                         </div>
                     </div>
+                    @if(!isset($id))
                     <div class="layui-form-item">
                         <label class="layui-form-label">变更表结构</label>
                         <div class="layui-input-inline" style="width: 50px;">
@@ -62,6 +63,7 @@
                         </div>
                         <div class="layui-form-mid layui-word-aux">某些情况下可能数据库表结构已经通过其它方式建好，此处无需操作数据库表，添加字段主要是方便利用框架提供的模型增删改查功能</div>
                     </div>
+                    @endif
                     <hr>
                     <div class="layui-form-item">
                         <label class="layui-form-label">表单名称</label>
diff --git a/tests/Feature/Admin/EntityControllerTest.php b/tests/Feature/Admin/EntityControllerTest.php
index d702d03a705eac24ad010c1fe7aefb956005c0b0..8e7e7e4c1fe3a29d3b26afff03232bf867ced93f 100644
--- a/tests/Feature/Admin/EntityControllerTest.php
+++ b/tests/Feature/Admin/EntityControllerTest.php
@@ -35,7 +35,7 @@ class EntityControllerTest extends TestCase
 
     public function testEntityCanBeCreated()
     {
-        $data = ['name' => '测试', 'table_name' => 'tests'];
+        $data = ['name' => '测试', 'table_name' => 'tests', 'is_modify_db' => 1];
         $response = $this->actingAs($this->user, 'admin')
             ->post('/admin/entities', $data);
         $response->assertJson(['code' => 0]);
@@ -47,7 +47,7 @@ class EntityControllerTest extends TestCase
 
     public function testEntityBeCreatedWhenTableHasExists()
     {
-        $data = ['name' => '测试', 'table_name' => 'tests'];
+        $data = ['name' => '测试', 'table_name' => 'tests', 'is_modify_db' => 1];
         Schema::create($data['table_name'], function (Blueprint $table) {
             $table->increments('id');
             $table->timestamps();