In order to solve the problems of heavy equipment, low automation, and inconvenience in practical application of the regional automatic weather station inspection equipment in Hainan Province, A design plan for meteorological element sensor on-site verification instrument based on the Internet of Things is distributed. By using digital sensor detection technology and wireless networking technology to construct a wireless sensor network(WSN), It can measure real-time meteorological data such as temperature, humidity, air pressure, wind and other data. Though comparing with the site's real-time operating data, It can auto to verificate the results in the field devices and judge whether the running of the equipment is normal. Field test verification shows that the on-site verifier equipment is highly accurate，highly stable，intelligent and portable, It can quickly and accurately provide on-site verification data of regional automatic weather stations, and greatly improve the efficiency of on-site verification,and it’s very suitable for on-site verification of regional weather stations．