Abstract:Periodic calibration of automatic weather station data is an important part of quality control. It has important role in detecting suspicious data and improving data availability. With the increasing of automatic weather station and the calibration works, original data processing and certificate has become a heavy work. An automatic weather stations’ calibration and certification system was developed in this paper. The system uses three layer architecture. It concludes station information management, calibration and standard information device management modules. The system achieves original calibration data processing automatically, certification printing and management. The test results show that the system operates easily and the calibration is accurate.