A method and system for implementing short distance wireless communication in public switched telephone network

The invention discloses a method and system for realizing short distance wireless communication in public telephone exchanging network, which is used between the public telephone exchanging network and wireless mobile communication network, through connecting a PSTN wireless accessing unit on the public telephone switching network, and arranging a double-model wireless terminal which can be used in wireless mobile communication network; the double-model wireless terminal is transplanted to the PSTN wireless accessing unit range, and creates wireless communication channel with the double-model wireless terminal through the PSTN wireless accessing unit, the double-model wireless terminal can register can connect to the PSTN wireless accessing unit automatically or manually, and accesses in the public telephone switching network. The method and system use the current public telephone switching network resources fully, provides convenient voice and data service to user with low cost.