Abstract: The regional automatic weather station is a highly automated meteorological instrument, which can automatically detect the temperature, rainfall, wind direction, wind speed, air pressure, humidity and other meteorological elements data of the construction site, and transmit the detection data to the central station in real time through mobile communication, providing scientific basic data for weather forecast, gas disaster monitoring and early warning and department decision-making services. This paper summarizes the composition and working principle of the regional automatic weather station. By analyzing the fault cases of Laibin regional weather station in 2020, it finds out the causes of the fault and discusses and summarizes the solutions, so as to provide reference for the fault maintenance of such regional weather stations.