Abstract: At present, domestic microseismic monitoring equipment is mainly cable transmission, which makes it difficult to install and upgrade equipment in rockburst mine. In view of this problem, a high-precision microseismic monitoring technology based on 5G wireless communication network is studied, and a wireless microseismic monitoring system supporting IEEE 1588 protocol is designed, which contains high-precision MEMS three-component microseismic sensor, uses 5G network communication module SIM8200EA-M2 as communication interface, achieves precise time synchronization through PTP protocol, and real-time operating system FreeRTOS and LWIP protocol stack are used to process data flow. The system realizes that the microseismic signals collected by the acquisition terminal enter the optical fiber ring network through 5G network, and the optical fiber ring network transmits data to the computer for positioning calculation through the network switch supporting PTP protocol. The synchronization accuracy of microseismic signals transmitted by each terminal is 120 ns. The experimental results show that the system has small delay and high precision when connected to 5G network, which meets the needs of intelligent monitoring of microseismic signals in rockburst mines.