diff --git a/app/controllers/pull_requests_controller.rb b/app/controllers/pull_requests_controller.rb
index 4a9e560f6..bfc2ab9f7 100644
--- a/app/controllers/pull_requests_controller.rb
+++ b/app/controllers/pull_requests_controller.rb
@@ -17,19 +17,21 @@ class PullRequestsController < ApplicationController
     @allow_to_pull_request = allow_pull_request(@project) > 0
 
     type = params[:type]
+    merge_requests = @g.merge_requests(@project.gpid)
+    merge_requests_count = merge_requests.count
     case type
       when nil, "1"
-        @requests = @g.merge_requests(@project.gpid).select{|request| request.state == "opened" || request.state == "reopened"}
+        @requests = merge_requests.select{|request| request.state == "opened" || request.state == "reopened"}
         # 更新统计数字
-        project_score = @project.project_score.update_column(:pull_request_num, @requests.count)
+        project_score = @project.project_score.update_column(:pull_request_num, merge_requests_count)
       when "2"
-        @requests = @g.merge_requests(@project.gpid).select{|request| request.state == "merged"}
+        @requests = merge_requests.select{|request| request.state == "merged"}
       when "3"
-        @requests = @g.merge_requests(@project.gpid).select{|request| request.state == "closed"}
+        @requests = merge_requests.select{|request| request.state == "closed"}
     end
     @requests_opened_count = @requests.count
-    @requests_merged_count = @g.merge_requests(@project.gpid).select{|request| request.state == "merged"}.count
-    @requests_closed_count = @g.merge_requests(@project.gpid).select{|request| request.state == "closed"}.count
+    @requests_merged_count = merge_requests.select{|request| request.state == "merged"}.count
+    @requests_closed_count = merge_requests.select{|request| request.state == "closed"}.count
 
     @limit = 10
     @is_remote = true