The thesis introduces the frame, data base, function module design and operation application of the Agricultural Meteorology Observation Report Working Base Statistical System (AgMOBase).The system is a matched operation system for the Agricultural Meteorology Observation Report Operation System (AgMODOS), which is developed by adopting the objectoriental technique and modular construction technique, consisting of fourlevel frameworks: data, technology, application and user. The system is already being implemented in the operation of agricultural meteorology observation stations across China, to conduct the daily basicdata statistical service as prescribed by the quality assessments of agrometeorological observation and software application by the relevant meteorological departments and provide the detailed monthly/annual base statistical reports.