diff --git a/app/controllers/admins/dashboards_controller.rb b/app/controllers/admins/dashboards_controller.rb
index 3d86f161d..d9e25c664 100644
--- a/app/controllers/admins/dashboards_controller.rb
+++ b/app/controllers/admins/dashboards_controller.rb
@@ -9,7 +9,7 @@ class Admins::DashboardsController < Admins::BaseController
     @month_active_user_count = User.where(last_login_on: current_month).or(User.where(id: month_user_ids)).count
     user_ids = User.where(created_on: pre_week).pluck(:id).uniq
     weekly_keep_user_count = User.where(id: user_ids).where(last_login_on: current_week).count
-    @weekly_keep_rate = format("%.2f", user_ids.size > 0 ? weekly_keep_user_count / user_ids.size : 0)
+    @weekly_keep_rate = format("%.2f", user_ids.size > 0 ? weekly_keep_user_count.to_f / user_ids.size : 0)
 
     # 新用户注册数
     @day_new_user_count = User.where(created_on: today).count