To solve problems of high cost, self exposure and resource waste that occurred to radar installed in tank fire control sys-tem. In order to improve the consecutive gunshot capability and realize multi-target tracking in tank fire control system, a new method was brought forward based on new coordinate system and GPS positioning. By this method, tracking multi-target positions generally can be realized by memorizing target position, forecasting target position and positioning gun angle. It is proved that this method can bring high veracity when target quantity is less than four. The new method has high economy value and good applica-tion foreground. It is concluded that this multi-target tracking method is feasible and effective.