Abstract:At present the metrological standard instrument and methods are not applicable t o ground meteorological station apparatus. To solve these problems, an auto tes t system of ground meteorological station are designed. The characteristic of the system is that the capability auto test of ground meteorological station sensor and data collector is divided. Auto test system of ground meteorologica l station sensors, like temperature, humidity, atmospheric pressure, wind direct ion, wind speed and precipitation sensors, adopt multi channel design, so many sensors can be auto tested at the same time and test result provided automatica lly. Auto test system of data collector can make capability auto test for diff e rent data collector system in each ground meteorological station. The designed a uto test system of ground meteorological station enhances the test efficiency o f ground meteorological instruments and ensures the accurate and reliability of ground meteorological observational data.