According to the requirements of wireless dynamic monitoring, the bridge wireless dynamic monitoring system based on zigbee technology is designed by STM32 processor and visual studio software platform. Signals such as pressure and temperature are collected by multi-channel sensors and sent to the STM32 processor for processing and analysis, and transmitted to the host computer through the wireless transceiver module. The upper computer monitoring system was designed and developed by using the visual studio software platform; the design of the whole dynamic monitoring system was completed. The experimental results show that the system can accurately monitor the pressure and temperature of the bridge. The near-field dynamics theory is used to analyze the damage of the bridge structure, which provides reliable prediction for the safety of the bridge. It has good practical value.