As a convenient, fast, reliable and economic value-added service, CDMA Short Message Service (SMS) becomes more and more popular in our daily work and lives. In this paper, the software package for sending and receiving short messages is realized, and it has simple interfaces and perfect functions. Based on WINCE 6.0, the USB port of Samsung S3C6410 is used as a virtual serial to realize the transmission of AT commands, and a specific realization of the processes and debugging results are given. The actual test results show that the software package can work stably. It can be used in the devices that support the WINCE 6.0.