Abstract: In view of problems that soil rotary tillage depth is not enough to affect deep tillage quality due to complex terrain and landforms in southern hilly and mountainous area, and operation area can not be easily counted to affect authenticity of operation subsidies, a monitoring terminal for deep tillage based on BeiDou Navigation Satellite System was built．Soil rotary tillage and land area monitoring test was carried out in Yibin City, Sichuan Province, and effects of test were analyzed．At the same time, reasons for complex operating geography, high failure rate of Beidou agricultural machinery deep ploughing monitoring terminal, poor compatibility of information collection terminal, insufficient base station facilities, and relatively low information level of farmers that restrict large-scale promotion and application of terminal in hilly and mountainous areas were analyzed．On this basis, countermeasures and suggestions were proposed to improve application level of the system in hilly and mountainous areas from aspects of strengthening technological research, focusing on equipment protection, formulating a unified standard system for BeiDou Navigation Satellite System agricultural applications, coordinating and strengthening Beidou differential enhancement infrastructure construction, strengthening personnel technical training and paying attention to after-sales service．A reference value for future improvement measures of large-scale popularization and application of system in southern hilly and mountainous areas was provided．