A short message processing method and apparatus, which analyzes a short message received from a mobile communication network and provides via a packet data service node (PDSN) a supplementary service such as a credit card settlement details notifying service, a contact point registration service, a spam filtering service, a schedule registration service, a message history management service, and so forth, based on the result of the analysis. The short message processing method and apparatus can execute a supplementary service corresponding to the short message received through a PDSN, in corporation with a platform such as WIPI or BREW.