Abstract: In view of problems existed in traditional gas inspection system , a new type of intelligent seperated style gas inspection system for coal mine was designed. The system is consisted of intrinsically safe inspection recorder, intrinsically safe portable multi parameter inspection instrument, site card, personal card and inspection server on the ground. The system completes collection of dynamic gas data, data comparison and data analysis on site by inspection recorder, then the processed data is sent to the inspection server on the ground through wireless network. The inspection server on the ground will output dynamic reports according to demands, and sends out early warning automatically.