diff --git a/app/controllers/homework_banks_controller.rb b/app/controllers/homework_banks_controller.rb
index a812da751..7e10509ba 100644
--- a/app/controllers/homework_banks_controller.rb
+++ b/app/controllers/homework_banks_controller.rb
@@ -11,7 +11,12 @@ class HomeworkBanksController < ApplicationController
 
   def update
     ActiveRecord::Base.transaction do
-      @bank.update_attributes(name: params[:name], description: params[:description], reference_answer: params[:reference_answer])
+      if @bank.homework_type == 1
+        @bank.update_attributes(name: params[:name], description: params[:description], reference_answer: params[:reference_answer])
+      elsif @bank.homework_type == 3
+        @bank.update_attributes(name: params[:name], description: params[:description], reference_answer: params[:reference_answer],
+                                base_on_project: params[:base_on_project], min_num: params[:min_num], max_num: params[:max_num])
+      end
 
       # 作业描述的附件
       Attachment.associate_container(params[:attachment_ids], @bank.id, @bank.class) if params[:attachment_ids]