Abstract:In order to make Beidou communication widely used , the upper computer software of Beidou short message is designed .Under the development platform of Labwindows/CVI software, a set of interactive interface for man-machine was designed, and the communication of Beidou short message was successfully realized through code realization and serial communication function library. This paper mainly introduces the communication function of Beidou short message using multi-thread, serial communication and other key technologies, and gives the result of functional test. The content of Beidou communication is well received and sent, and the software performance of the upper computer is stable, which meets the actual requirements of Beidou short message communication in practice.