Aiming at the problem of low navigation accuracy caused by the complex road environment and the influence of the surrounding buildings in the military base or warehouse, an auxiliary vehicle integrated navigation scheme based on Radio Frequency Identification (RFID) is proposed.The corresponding mathematical model is constructed.The RFID can modify the position information calculated by GPS in combined navigation system, which plays an auxiliary role in navigation.Finally, simulation experiment is made on Matlab.The experimental results show that the position error of the target vehicle is effectively suppressed under the assistance of RFID.The auxiliary navigation system can improve the accuracy and reliability of the integrated navigation system and meet the requirements of high-precision positioning of military transport vehicles.