Abstract: According to the requirements of coal mine wireless communication system, the TD-SCDMA RF module is designed, it has the characteristics of low-cost and wide covering range. The hardware platform of this module is composed of FPGA and CPLD logic components. μC/OS-II is the core of open source real-time embedded operating system with high quality RF module. Through this module, it achieves underground wireless signal coverage of TD-SCDMA system, and carries out real-time monitoring of module status with ground monitoring software.