Abstract: Geographic Information System （GIS） is more and more important in the development of the national economy. The build of GIS in medium and small cities can provide audio-visual and accurate information correlated with it for government department making policies. To choose MapInfo as basic GIS platform, which is superior for cities’ survey and drawing. Making use of MapInfo software secondary development language to develop comprehensive models of survey and drawing can overcome the shortcomings for the both. Using the secondary development technology of MapInfo software to realize GIS in survey and drawing of medium and small cities can offer a completely new way for human beings communicating information and sharing data.