The cultivated land is the basis of food security and the foundation of state. In order to regulate the cultivated land in China synthetically and three-dimensionally, according to Chinese national conditions, trinity comprehensive regulatory system about the quantity, quality and ecology of the cultivated land was studied from the perspective of system theory and public administration. Through literature analysis method combined with cutting-edge technology, the ecological regulation theory was improved based on the current relatively mature theory of cultivated land quantity, quality supervision system, the innovation of ecological regulation theory was researched, the index of cultivated land quantity, quality and ecology was constructed, and then a trinity comprehensive index system was built on this basis. Through data acquisition system of remote sensing technology, the internet of things and the internet to real-timely acquire multi-source data, and through cleansing and integration, to build cloud database that is a supervision technology system can be promoted and easy to replicate in the test points all over the country. Researching regulatory index rapid computing technology, the trinity comprehensive regulatory system was set up based on multi-source data, distributed service-oriented cultivated land. The cultivated land trinity supervision platform was constructed, it would make idea into a finished product, and provided service for government departments and regulatory decisions. The trinity supervision system of the cultivated land can provide technical support for the regulation and maintenance of the cultivated land in China.