diff --git a/fastapi_amis_admin/crud/_sqlalchemy.py b/fastapi_amis_admin/crud/_sqlalchemy.py
index 6af162d..55278a1 100644
--- a/fastapi_amis_admin/crud/_sqlalchemy.py
+++ b/fastapi_amis_admin/crud/_sqlalchemy.py
@@ -316,8 +316,10 @@ def _create_schema_filter(self) -> Type[SchemaFilterT]:
         )
 
     def _create_schema_read(self) -> Optional[Type[SchemaReadT]]:
-        if not self.read_fields:
+        if self.read_fields is None:
             return None
+        # Set the read fields to the schema update if not provided
+        self.read_fields = self.read_fields or model_fields(self.schema_update)
         # Filter out any non-model fields from the read fields
         modelfields = self.parser.filter_modelfield(self.read_fields)
         # Create the schema using the model fields
diff --git a/fastapi_amis_admin/crud/base.py b/fastapi_amis_admin/crud/base.py
index 7d8ff1b..4db7409 100644
--- a/fastapi_amis_admin/crud/base.py
+++ b/fastapi_amis_admin/crud/base.py
@@ -81,8 +81,8 @@ def register_crud(
         self.schema_list = schema_list or self.schema_list or self._create_schema_list()
         self.schema_filter = schema_filter or self.schema_filter or self._create_schema_filter()
         self.schema_create = schema_create or self.schema_create or self._create_schema_create()
-        self.schema_read = schema_read or self.schema_read or self._create_schema_read()
         self.schema_update = schema_update or self.schema_update or self._create_schema_update()
+        self.schema_read = schema_read or self.schema_read or self._create_schema_read()
         self.list_per_page_max = list_per_page_max or self.list_per_page_max
         self.paginator = Paginator(perPageMax=self.list_per_page_max)
         self.router.add_api_route(
diff --git a/tests/test_crud/test_SqlalchemyCrud_fields.py b/tests/test_crud/test_SqlalchemyCrud_fields.py
index 27e0ef5..ea96393 100644
--- a/tests/test_crud/test_SqlalchemyCrud_fields.py
+++ b/tests/test_crud/test_SqlalchemyCrud_fields.py
@@ -364,6 +364,7 @@ class ArticleCrud(SqlalchemyCrud):
 async def test_read_fields_and_schema_read_is_none(app: FastAPI, models):
     class ArticleCrud(SqlalchemyCrud):
         router_prefix = "/article"
+        read_fields = None
 
     ins = ArticleCrud(models.Article, db.engine).register_crud()