A short message website-address device includes a short message website-address analysis module for receiving information from a Short Message Service centre (SMS centre), determining a short message website-address and an application server address according to the information, or further determining service option information, and sending the information and the short message website-address, or the information, the short message website-address and the service option information, to a website-address access management module; the website-address access management module for receiving information from the short message website-address analysis module and sending the information to the application server according to the application server address contained in the information. The present invention also discloses a system and a method for implementing a short message Value-added Service (VAS). Thus, a user may participate in multiple short message VASs without remembering multiple fussy service numbers, which enhances the easy-to-use quality and attraction of the short message VASs.