diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 19fc3adf1..905b2c41d 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -23,7 +23,7 @@ class ApplicationController < ActionController::Base
 
 	# 所有请求必须合法签名
 	def check_sign
-		timestamp = Time.now.to_i
+		timestamp = params[:timestamp]
 		sign = Digest::MD5.hexdigest("#{OPENKEY}#{timestamp}")
 		tip_exception(501, "请求不合理") if sign != params[:client_key]
 	end