A new method is developed based on ArcGIS graphic element to improve the capabilities of decision support for military plotting system. This method using control points generate unformulated military symbol, using ArcGIS plotting function instead of graphic element draw military symbol dynamically, using attribute identification of graphic element integrate military and attribute data, design and realize a military plotting system based on this solution, and successfully apply on practical project. The results show that this system not only is convenient to plot, but also has decision support capabilities for commanders to provide a powerful means of scientific decision-making.