diff --git a/app/controllers/homework_commons_controller.rb b/app/controllers/homework_commons_controller.rb
index 8696b802a..ac3b84871 100644
--- a/app/controllers/homework_commons_controller.rb
+++ b/app/controllers/homework_commons_controller.rb
@@ -368,6 +368,7 @@ class HomeworkCommonsController < ApplicationController
     ActiveRecord::Base.transaction do
       begin
         @homework = HomeworkCommon.new(homework_params)
+        @homework.reference_answer = params[:reference_answer].to_s.strip
         @homework.homework_type = @homework_type
         @homework.user_id = current_user.id
         @homework.course_id = @course.id
@@ -417,6 +418,7 @@ class HomeworkCommonsController < ApplicationController
     ActiveRecord::Base.transaction do
       begin
         @homework.update_attributes!(homework_params)
+        @homework.reference_answer = params[:reference_answer].to_s.strip
 
         if @homework.homework_type == "group"
           homework_detail_group = @homework.homework_detail_group
@@ -1404,8 +1406,8 @@ class HomeworkCommonsController < ApplicationController
   end
 
   def homework_params
-    tip_exception("name参数不能为空") if params[:name].blank?
-    tip_exception("description参数不能为空") if params[:description].blank?
+    tip_exception("标题不能为空") if params[:name].blank?
+    tip_exception("内容不能为空") if params[:description].blank?
     params.require(:homework_common).permit(:name, :description, :reference_answer)
   end
 
diff --git a/app/models/homework_common.rb b/app/models/homework_common.rb
index 8f084befd..de245517d 100644
--- a/app/models/homework_common.rb
+++ b/app/models/homework_common.rb
@@ -35,7 +35,7 @@ class HomeworkCommon < ApplicationRecord
   # 学生的查重情况
   has_many :homework_review_results, :dependent => :destroy
 
-  validates :name, length: { maximum: 60, too_long: "不能超过60个字符" }
+  validates :name, presence: true, length: { maximum: 60, too_long: "不能超过60个字符" }
   validates :description, length: { maximum: 15000, too_long: "不能超过15000个字符" }
   validates :explanation, length: { maximum: 5000, too_long: "不能超过5000个字符" }
   validates :reference_answer, length: { maximum: 15000, too_long: "不能超过15000个字符" }