Abstract: According to the needs of wireless communication of working face of coal mine, the paper analyzed advantages and disadvantages of existing wired and wireless communication technologies used in working face, proposed a design scheme of full coverage wireless communication system of working face of coal mine based on WMN and ZigBee technology, and introduced designs of comprehensive base station and WiFi gateway. The test results show that the system can meet the needs of wireless transmission of different information of data, voice, video, so as to achieve full coverage of wireless signal of working face.