The World Wide Web has changed all aspects of human society and also changed the geographical information system. The fusion of the World Wide Web and geographical information systems has given rise to the emerging field of the World Wide Web Geographical Information System (WebGIS). WebGIS has developed rapidly since its emergence in 3, and its unique use and charm have become one of the main attractions for people to use the Internet (Longley et al., 2005)。Whether people realize it or not, the vast majority of Internet users have already used WebGIS, some for simple Web maps and some for more professional applications.