Abstract MapGIS does well in map drawing, but appending dots representing epicenter in seismic tectonic map is an actually tedious work. A method that concludes following steps is presented. Firstly,convert the text file recording earthquake information into the clear text of MapGIS, sencondly,create graphic file from the clear text,finally, connect attribute for dynamically marking. According to the above procedure, taking Microsoft VC++6.0 as the tool, drawing epicentre distribution map based on secondary development of MapGIS can be realized fast and accurately.
