It is very important to send the warning message timely to decision makers when there occurs severe weather. The communication between PC and GSM module by utilizing VB 6.0 communication technology is introduced, and the short message compiling and sending, system management and some related critical techniques are described in detail. It can provide technical support for the development of the meteorological decisionmaking short message service platform. The system emphasizes the authoritativeness of information announcement; the issued messages must be examined strictly and signed and the authorization management is performed for user codes.