The utility model provides a communication system of a micro-electromechanical digital seismic detector, which belongs to the field of data communication. The communication system comprises an uplink data channel and a downlink data channel, adopts the existing commercial device FPGA with low power consumption and low cost, and achieves low-power consumption and high-speed data transmission through a logical and sequence circuit, so that the problem of data transmission under complex terrain of rivers, forests, cliffs during seismic exploration can be solved, the construction strength is relived and the work efficiency is improved. The communication system, the micro-electromechanical digital seismic detector and a central data recording and processing unit form a complete micro-electromechanical seismic data acquisition system.