The invention discloses an intelligent meter access system based on Beidou short message communication transmission, provides an intelligent meter information transmission solution based on Beidou technology. The system has a safer, more convenient and efficient intelligent meter access function. The system comprises an intelligent meter terminal, a Beidou short message communication system, a security access platform and an enterprise intranet. The Beidou short message communication system comprises a Beidou director and a Beidou communication front end. The Beidou communication front end communicates with the safety access area; the Beidou director communicates with the communication terminal through an air interface; the communication terminal comprises a Beidou communication module anda Beidou data transmission terminal which are connected with each intelligent meter terminal; the system further comprises a unified key management system, and the unified key management system issues a key to the intelligent meter terminal and verifies the key of the security access platform; the Beidou short message communication system communicates through a Beidou safety communication protocol; and the Beidou safety communication protocol adopts an SM4 algorithm, an SM2 algorithm and an SM3 algorithm in a commercial cryptographic algorithm.