Unmanned air vehicle (UAV) remote sensing system is a new way of rapid acquisition of high resolution im-age data. It is efficient,quick,accurate and economic. This paper introduced the composition and characteristics of UAV remote sensing system,designed a technical process for application of UAV remote sensing system in land and re-sources law enforcement and supervision,and made a testing analysis with the town of Wanzhi,Wuhu County as the aerophotographic area. After remote sensing image pretreatment,such as geometric correction,aerial triangulation en-cryption,image mosaicking and data precision analysis,and registration with landsat image data of 2011 and the second land survey’s land utilization status database,it made an initial assessment of the land use change in the area under su-pervision and proved good in the result.