Chengcheng County is a key mineral resource development zone in Weinan City. It has rich coal resources underground. It has a long history of coal mining, a large amount of coal, and a large area of mined out. While making great contributions to the country and the local area, it has also accumulated many questions. Due to the chaotic and disorderly mining of the township and village collective private enterprises, it has caused great environmental hazards. Comprehensive management is urgently needed to improve agricultural production conditions and the agricultural environment, while improving the quality of existing cultivated land, and improving farmland water conservancy and roads. Infrastructure such as transportation provides necessary conditions for the large-scale and intensified agriculture and the realization of the dynamic balance of the total arable land. Through engineering practice, this paper puts forward specific measures for the improvement of coal mining subsidence area, in order to provide a basis for related projects.