Abstract: At present, the geographic information system has been widely applied to various fields of the society. GIS research and development of the actual system to solve the contradiction between the search coverage and search accuracy have been a research focus of staff attention. Algorithms have been proposed based on basic POI search algorithm by increasing the auxiliary information points to help a fast and accurate positioning of a point of interest. I}his algorithm improves the efficiency of the search. On the basis of these work, using ARCGIS and the VS2010 tools, developes Guiyang radioactive source management system, achieve the basic function of the geographic information system, and using the auxiliary information point POI search algorithm achieves a system of basic search function. These works verify the feasibility of the algorithm

Key words: Radioactive sources, Geographic information system, Points of interest, Keyword