Abstract: In order to satisfy the requirement that the vehicular electro-optical reconnaissance system can quickly share target information to relevant auxiliary weapon system real-timely in wild environment, a method for sharing target information of different photoelectric platforms, as well as the error analysis of this method are presented.By introducing the informations such as the attitude angle of auxiliary weapon platform and the attitude angle of EO reconnaissance platform, the method can transmit the target information detected by EO reconnaissance system to auxiliary weapon system precisely in real time.In order to verify the correctness of the method, through the modeling analysis, it is concluded that the method can realize the sharing of target information.The error of the method is analyzed by simulation test, results show that the target information after conversion by the method can improve by about 3.5 m in terms of accuracy compared with the direct use of the collected target information.