A shapefile to SWF conversion software was mainly introduced. By converting the traditional GIS files such as ESRI Shapefile to the Shock Wave Flash (SWF) file format, the GIS data was highly compressed and suitable for the Internet publication. The generation of SWF files provided a complement for the current WebGIS technology and by using the converted SWF map files, an extended example of flash-based application in multi-level analysis to the socio-economic data was constructed. The example demenstrated its easy configuration and powerful potential ablities. More powerful applications based on SWF will be continued in the future work.