diff --git a/app/controllers/pull_requests_controller.rb b/app/controllers/pull_requests_controller.rb
index 8e119b19c..00ba47dec 100644
--- a/app/controllers/pull_requests_controller.rb
+++ b/app/controllers/pull_requests_controller.rb
@@ -3,6 +3,7 @@ class PullRequestsController < ApplicationController
   before_filter :connect_gitlab, :only => [:index, :show, :create, :accept_pull_request, :pull_request_commits, :pull_request_changes, :new]
   layout "base_projects"
   include PullRequestsHelper
+  include ApplicationHelper
 
   # 返回json格式
   def index
@@ -21,16 +22,19 @@ class PullRequestsController < ApplicationController
     end
   end
 
+  # 主要取源项目和目标项目分支及标识（用户名/版本库名）
   def new
-    @rev = @g.branches(@project.gpid).map{|b| b.name}
-    @target_project = []
+    identifier = get_rep_identifier_by_project @project
+    @source_project_name = "#{get_user_name(@project.user_id)}/#{identifier}"
+    @source_rev = @g.branches(@project.gpid).map{|b| b.name}
+
+    # 获取forked源项目信息
     if @project.forked_from_project_id
       @forked_project = Project.find(@project.forked_from_project_id)
-      @target_project << "#{get_user_name(@forked_project.user_id)}/#{@forked_project.name}"
+      identifier = get_rep_identifier_by_project @forked_project
+      @forked_project_name = "#{get_user_name(@forked_project.user_id)}/#{identifier}"
+      @forked_rev = @g.branches(@forked_project.gpid).map{|b| b.name}
     end
-    # @forked_rev = @g.branches(forked_project.gpid).map{|b| b.name}
-    @target_project << "#{get_user_name(@project.user_id)}/#{@project.name}"
-
   end
 
   # Creates a merge request.
diff --git a/app/views/pull_requests/_form.html.erb b/app/views/pull_requests/_form.html.erb
index 9b44fa943..c7e21a7b9 100644
--- a/app/views/pull_requests/_form.html.erb
+++ b/app/views/pull_requests/_form.html.erb
@@ -9,15 +9,26 @@
     </div>
     <div class="new-merge-wrap borderBottomNone">
       <div class="merge-option-name fl" style="padding:5px 0">源分支</div>
-      <%= select_tag :branch, options_for_select(@rev), :name => "source_branch", :value => "source_branch", :class => "ml30 fontGrey3 fb fl", :style => "padding:5px 0 5px 5px;" %>
+      <%= select_tag :branch, options_for_select(@source_rev), :name => "source_branch", :value => "source_branch", :class => "ml30 fontGrey3 fb fl", :style => "padding:5px 0 5px 5px;" %>
       <!--<select name="source_branch" value="source_branch" class="ml30 fontGrey3 fb fl"><option>master</option><option>develop</option><option>rep_quality</option></select>-->
       <div class="cl mb10"></div>
       <div class="merge-option-name fl" style="padding:5px 0">目标分支</div>
-      <% unless @target_project.blank? %>
-        <%= select_tag :branch, options_for_select(@target_project), :name => "target_project", :value => "target_project", :class => "ml30 fontGrey3 fb fl", :style => "padding:5px 0 5px 5px;", :id => "targetProject" %>
+      <% if @forked_project.nil? %>
+          <%= select_tag :branch, options_for_select(@source_project_name), :name => "target_project", :value => "target_project",
+                         :class => "ml30 fontGrey3 fb fl", :style => "padding:5px 0 5px 5px;", :id => "targetProject" %>\
+          <%= select_tag :branch, options_for_select(@source_rev), :name => "target_branch", :value => "target_branch",
+                         :class => "ml30 fontGrey3 fb fl", :style => "padding:5px 0 5px 5px;", :id => "targetBranch" %>
+      <% else %>
+          <select onchange="choice_branch(this.value, document.getElementById('branch'), <%= @source_rev %>, <%= @forked_rev %>);" name="source_branch" value="source_branch" class="ml30 fontGrey3 fb fl" style = "padding:5px 0 5px 5px;">
+            <option value="source_project_name"><%= @source_project_name %></option>
+            <option value="forked_project_name"><%= @forked_project_name %></option>
+          </select>
+          <select name="branch" id="branch" class = "ml30 fontGrey3 fb fl" style = "padding:5px 0 5px 5px;"></select>
+          <%#= select_tag :branch, options_for_select([@source_project_name, @forked_project_name]), :name => "target_project", :value => "target_project",
+                         :class => "ml30 fontGrey3 fb fl", :style => "padding:5px 0 5px 5px;", :id => "targetProject" %>
+          <%#= select_tag :branch, options_for_select(@source_rev), :name => "target_branch", :value => "target_branch",
+                         :class => "ml30 fontGrey3 fb fl", :style => "padding:5px 0 5px 5px;", :id => "targetBranch" %>
       <% end %>
-      <%= select_tag :branch, options_for_select(@rev), :name => "target_branch", :value => "target_branch", :class => "ml30 fontGrey3 fb fl", :style => "padding:5px 0 5px 5px;", :id => "targetBranch" %>
-
       <!--<select name="target_branch" value="source_branch" class="ml30 fontGrey3 fb fl"><option>master</option><option>hjq_course</option><option>hjq_beidou</option><option>develop</option><option>dev_huang</option></select>-->
       <div class="cl"></div>
     </div>
diff --git a/public/javascripts/project.js b/public/javascripts/project.js
index fa5648ffa..3918c116d 100644
--- a/public/javascripts/project.js
+++ b/public/javascripts/project.js
@@ -658,3 +658,25 @@ function search_tag_attachment(url,tag_name,q,course_id,sort)
     }
 
 }
+
+
+function choice_branch(name, branch, source_rev, forked_rev) {
+    switch (name) {
+        case "source_project_name" :
+            alert(source_rev);
+            var branchOptions = source_rev;
+            break;
+        case "forked_project_name" :
+            alert(forked_rev);
+            var branchOptions = forked_rev;
+            break;
+        default:
+            var branchOptions = new Array("");
+            break;
+    }
+
+    branch.options.length = 0;
+    for (var i = 0; i < branchOptions.length; i++) {
+        branch.options[i] = new Option(branchOptions[i], branchOptions[i]);
+    }
+}
\ No newline at end of file