Abstract: This paper studies and puts forward the requivements of the short message paging technology of the CDMA mobile switch system, mainly describes the technology requirements, call flow work processes and so on of the CDMA mobile switch system SMS paging service switches and adjacent switches, and the application effects of technology used in the network are also assessed. In this paper, the CDMA SMS system paging technology can significantly improve first paging success rate of the CDMA network MT message.