diff --git a/app/controllers/admin/venue_management_contracts_controller.rb b/app/controllers/admin/venue_management_contracts_controller.rb
index 5333c0e..de86848 100644
--- a/app/controllers/admin/venue_management_contracts_controller.rb
+++ b/app/controllers/admin/venue_management_contracts_controller.rb
@@ -9,7 +9,17 @@ class Admin::VenueManagementContractsController < Admin::VenueAdminController
     super
     @app_title = 'venue_management'
   end
-
+  def fetch_inviting
+    invitings = VenueManagementInviting.where(id: params[:id])
+    data = {}
+    if !invitings.first.nil?
+      key = [:early_rent,:operation_rent,:royalty,:house_tax_payer,:land_tax_payer]
+      invitings.pluck(*key)[0].each_with_index do |v,i|
+        data[key[i]] = v
+      end
+    end
+    render :json => data
+  end
   def index
     @table_fields = [
       'venue_management.title',
diff --git a/app/models/venue_management_contract.rb b/app/models/venue_management_contract.rb
index 3f0d680..fc6cbf1 100644
--- a/app/models/venue_management_contract.rb
+++ b/app/models/venue_management_contract.rb
@@ -54,9 +54,7 @@ class VenueManagementContract
   belongs_to :venue_management_main
   belongs_to :venue_management_inviting
   include VenueLinkFile
-  before_save do
-    org_contract = VenueManagementContract.find(self.id) rescue nil
-    inviting = VenueManagementInviting.find(self.venue_management_inviting_id) rescue nil
+  def update_inviting(inviting,check_inviting,org_contract=nil,save_flag=true)
     if !inviting.nil?
       %i(case_no publish_times start_date end_date close_date bid_date evaluation_date contractor_manager bid_result details).each do |attr_|
         self[attr_] = inviting.send(attr_) rescue nil
@@ -67,7 +65,7 @@ class VenueManagementContract
     update_flag = true
     if !org_contract.nil? && org_contract.venue_management_inviting_id == self.venue_management_inviting_id
       %i(early_rent operation_rent royalty house_tax_payer land_tax_payer).each do |attr_|
-        if self[attr_] != (inviting.send(attr_) rescue nil)
+        if self[attr_] != (check_inviting.send(attr_) rescue nil)
           update_flag = false
         end
       end
@@ -77,5 +75,13 @@ class VenueManagementContract
         self[attr_] = (inviting.send(attr_) rescue nil)
       end
     end
+    if save_flag
+      self.save
+    end
+  end
+  before_save do
+    org_contract = VenueManagementContract.find(self.id) rescue nil
+    inviting = VenueManagementInviting.find(self.venue_management_inviting_id) rescue nil
+    update_inviting(inviting,inviting,org_contract,false)
   end
 end
diff --git a/app/models/venue_management_inviting.rb b/app/models/venue_management_inviting.rb
index 0afe740..b7f2acc 100644
--- a/app/models/venue_management_inviting.rb
+++ b/app/models/venue_management_inviting.rb
@@ -32,8 +32,9 @@ class VenueManagementInviting
   include VenueLinkFile
   before_save do
     contracts = self.venue_management_contracts
+    org_inviting = VenueManagementInviting.find(self.id) rescue nil
     contracts.each do |contract|
-      contract.save
+      contract.update_inviting(self,org_inviting,contract)
     end
   end
 end
diff --git a/app/views/admin/venue_management_contracts/_form.html.erb b/app/views/admin/venue_management_contracts/_form.html.erb
index a5ca4d7..54194db 100644
--- a/app/views/admin/venue_management_contracts/_form.html.erb
+++ b/app/views/admin/venue_management_contracts/_form.html.erb
@@ -228,5 +228,18 @@
         $('#renewal_deadline').hide()
       }
     })
+    $('#venue_management_contract_venue_management_inviting_id').change(function(){
+        $.ajax({
+          url : "/admin/venue_management_contracts/fetch_inviting",
+          data : {"id" : $(this).val()},
+          dataType : "json",
+          type : "post",
+          success : function(data){
+            $.each(data,function(k,v){
+              $('*[name="venue_management_contract['+k+']"]').val(v)
+            })
+          }
+        })
+    })
   })
 </script>
\ No newline at end of file
diff --git a/config/routes.rb b/config/routes.rb
index 3684580..db4c654 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -27,7 +27,11 @@ Rails.application.routes.draw do
     resources :venue_management_item_contents
     resources :venue_management_invitings
     resources :venue_management_memorabilias
-    resources :venue_management_contracts
+    resources :venue_management_contracts do
+      collection do
+        post 'fetch_inviting'
+      end
+    end
    end
 
     resources :venue_managements do