diff --git a/app/controllers/api/pm/sprint_issues_controller.rb b/app/controllers/api/pm/sprint_issues_controller.rb
index 0a6f7e48f..14e26c76a 100644
--- a/app/controllers/api/pm/sprint_issues_controller.rb
+++ b/app/controllers/api/pm/sprint_issues_controller.rb
@@ -14,13 +14,14 @@ class Api::Pm::SprintIssuesController < Api::Pm::BaseController
     start_time = Date.parse params[:start_time]
     end_time = Date.parse params[:end_time]
     x = (end_time - start_time).to_i + 1 #计算间隔时间 加上最后一天
+    base_number = (@issues.count / x).to_f
     data = []
     curren_issues =  @issues.group(:status_id,:due_date).count
     x.times do |time|
       e_time = start_time + time
       undone = curren_issues[[1,nil]].to_i + curren_issues[[1,e_time]].to_i + curren_issues[[2,e_time]].to_i + curren_issues[[3,e_time]].to_i
       completed = curren_issues[[4,e_time]].to_i + curren_issues[[5,e_time]].to_i
-      data << {time: e_time, undone: undone, completed:completed}
+      data << {time: e_time, undone: undone, completed:completed, base_number: (base_number * (x - time))}
     end
     render_ok(data: data)
   end