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In order to improve operational soil moisture observation, a soil moisture monitoring and analysis system is developed, which realizes the united assessment and treatment of data with the equipment from different factories. Based on the requirements of agricultural drought monitoring service, the functions of data quality control, monitoring and early warning, and data application are added in the system. The establishment of the system has a practical significance to the improvement of data quality and the technical insurance in equipment. Through the local area network or Internet, the personnel in basic stations can understand and analyze in real time soil moisture changes in the local or provincial areas, which provides a powerful and reliable service means for agricultural production. The trial application indicates that the system runs steadily and has broad application prospects.