diff --git a/app/forms/base_form.rb b/app/forms/base_form.rb
index c41a12993..c5776048e 100644
--- a/app/forms/base_form.rb
+++ b/app/forms/base_form.rb
@@ -2,11 +2,11 @@ class BaseForm
   include ActiveModel::Model
 
   def check_project_category(project_category_id)
-    raise "project_category_id参数值无效." if project_category_id && !ProjectCategory.exists?(project_category_id)
+    raise "project_category_id参数值无效." unless project_category_id == '' && (project_category_id && !ProjectCategory.exists?(project_category_id))
   end
 
   def check_project_language(project_language_id)
-    raise "project_language_id参数值无效." if project_language_id && !ProjectLanguage.exists?(project_language_id)
+    raise "project_language_id参数值无效." unless project_language_id == '' && (project_language_id && !ProjectLanguage.exists?(project_language_id))
   end
 
   def check_repository_name(user_id, repository_name)
diff --git a/app/forms/projects/update_form.rb b/app/forms/projects/update_form.rb
index 65810a820..0cd2c9459 100644
--- a/app/forms/projects/update_form.rb
+++ b/app/forms/projects/update_form.rb
@@ -1,6 +1,6 @@
 class Projects::UpdateForm < BaseForm
   attr_accessor :name, :description, :project_category_id, :project_language_id, :private
-  validates :name, :description, :project_category_id, :project_language_id, presence: true
+  validates :name, presence: true
   validates :name, length: { maximum: 50 }
   validates :description, length: { maximum: 200 }
   validate do