It is an important measure for the country to promote poverty alleviation and overall planning of land use, which is a policy and business work with strong nature. The early field investigation and reconnaissance, and the information and data storage are the important links of the whole project. The application of traditional instruments and equipment in this project has problems such as high cost, inconvenience, low flexibility, low intelligence and complex data, which are not conducive to the team's information sharing and high-speed and high-quality operations. With the combination of GPS, RS and GIS, the task is decomposed according to the village, combined with the map spot for the construction of the second survey, and the intelligent mobile terminal with high penetration rate is used to load the Ove interactive map as the field collection carrier, which can greatly improve the eficiency from the aspects of information acquisition, data integration, management and statistics. In this paper, based on the combination of intelligentmobile terminal and 3S technology, the working mode is applied in the project of linking the increase and decrease of the clearance and reclamation of the old house base in rural areas, forming a new working method and means, which can not only improve the eficiency but also reduce the cost and ensure the quality, so as to better serve the later construction.