diff --git a/app/libs/wechat/weapp.rb b/app/libs/wechat/weapp.rb
index 9684206cd..ca356b28d 100644
--- a/app/libs/wechat/weapp.rb
+++ b/app/libs/wechat/weapp.rb
@@ -31,7 +31,9 @@ class Wechat::Weapp
       cipher.padding = 0
       cipher.key = session_key
       cipher.iv  = iv
+      Rails.logger.info("[Weapp] encrypted_data: #{encrypted_data}")
       data = cipher.update(encrypted_data) << cipher.final
+      Rails.logger.info("[Weapp] data: #{data}")
       result = JSON.parse(data[0...-data.last.ord])
 
       raise Wechat::Error.new(-1, '解密错误') if result.dig('watermark', 'appid') != appid