diff --git a/client/collection.go b/client/collection.go
index 6fbec973..a21188a2 100644
--- a/client/collection.go
+++ b/client/collection.go
@@ -204,9 +204,6 @@ func (c *GrpcClient) validateSchema(sch *entity.Schema) error {
 			if autoID {
 				return errors.New("only one auto id is available")
 			}
-			if field.DataType != entity.FieldTypeInt64 {
-				return errors.New("only int64 column can be auto generated id")
-			}
 			autoID = true
 		}
 		if field.DataType == entity.FieldTypeJSON {
diff --git a/client/collection_test.go b/client/collection_test.go
index edfe788d..745f0761 100644
--- a/client/collection_test.go
+++ b/client/collection_test.go
@@ -374,13 +374,6 @@ func (s *CollectionSuite) TestNewCollection() {
 		err := c.NewCollection(ctx, testCollectionName, testVectorDim, WithPKFieldName("my_pk"), WithPKFieldType(entity.FieldTypeVarChar), WithVectorFieldName("embedding"), WithConsistencyLevel(entity.ClEventually))
 		s.NoError(err)
 	})
-
-	s.Run("varchar_autoid", func() {
-		defer s.resetMock()
-
-		err := c.NewCollection(ctx, testCollectionName, testVectorDim, WithPKFieldType(entity.FieldTypeVarChar), WithAutoID(true))
-		s.Error(err)
-	})
 }
 
 func (s *CollectionSuite) TestRenameCollection() {
diff --git a/test/testcases/collection_test.go b/test/testcases/collection_test.go
index 2cd6cb48..9ef77202 100644
--- a/test/testcases/collection_test.go
+++ b/test/testcases/collection_test.go
@@ -220,20 +220,19 @@ func TestCreateCollectionNonInt64AutoField(t *testing.T) {
 		entity.FieldTypeInt32,
 		entity.FieldTypeFloat,
 		entity.FieldTypeDouble,
-		entity.FieldTypeVarChar,
+		// entity.FieldTypeVarChar,
 		entity.FieldTypeString,
 		entity.FieldTypeNone,
 		entity.FieldTypeJSON,
 	}
 	for _, fieldType := range invalidPkFields {
 		fields := []*entity.Field{
-			common.GenField("non-auto-id", fieldType, common.WithAutoID(true)),
-			common.GenField(common.DefaultIntFieldName, entity.FieldTypeInt64, common.WithIsPrimaryKey(true), common.WithAutoID(true)),
+			common.GenField(common.DefaultIntFieldName, fieldType, common.WithIsPrimaryKey(true), common.WithAutoID(true)),
 			common.GenField(common.DefaultFloatVecFieldName, entity.FieldTypeFloatVector, common.WithDim(common.DefaultDim)),
 		}
 		schema := common.GenSchema(common.GenRandomString(6), true, fields)
 		errNonInt64Field := mc.CreateCollection(ctx, schema, common.DefaultShards)
-		common.CheckErr(t, errNonInt64Field, false, "only int64 column can be auto generated id")
+		common.CheckErr(t, errNonInt64Field, false, "only int64 and varchar column can be primary key for now")
 	}
 }