diff --git a/app/services/users/apply_trail_service.rb b/app/services/users/apply_trail_service.rb
index 61563c301..45abd8d1b 100644
--- a/app/services/users/apply_trail_service.rb
+++ b/app/services/users/apply_trail_service.rb
@@ -24,7 +24,11 @@ class Users::ApplyTrailService < ApplicationService
 
         apply.status = 1
       else
-        send_trial_apply_notify!
+        sms_cache = Rails.cache.read("apply_auth")
+        if sms_cache.nil?
+          send_trial_apply_notify!
+          Rails.cache.write("apply_auth", 1, expires_in: 5.minutes)
+        end
       end
       apply.save!
     end