Aiming at the operational demands under the information condition, a position selection algorithm of electronic warfare equipment based on digital cartographic data is proposed. On the basis of analyzing the main factors that affect position selection of electronic warfare equipment, position deployment of electronic warfare units and equipment is selected. A series of tasks and operations achieved by using digital cartographic data is expatiated. The result shows that the algorithm can rapidly complete complicated calculation and evaluation operations, and greatly improve the selection effectiveness for position of electronic warfare equipment and unit deployment