An inter-vehicle wireless payment method based on a 5G communication network, comprising: a request sending step (S100), in which a requesting vehicle sends a payment request to a base station; a request-based retrieving step (S200), in which the base station retrieves vehicle information of a second vehicle stored in association with the requesting vehicle as a friend vehicle of the requesting vehicle based on the payment request; an encrypting step (S300), in which the base station encrypts payment request information using the vehicle information of the friend vehicle; a broadcasting step (S400), in which the base station broadcasts the encrypted payment request information; a decrypting and receiving step (S500), in which at least one vehicle within a broadcast coverage of the base station attempts to decrypt the broadcasted payment request information using its respective vehicle information, and if one of the at least one vehicle decrypts the broadcasted payment request information successfully, the one of the at least one vehicle, that is the friend vehicle, acts as a responding vehicle and acquires the payment request information; a payment implementation step (S600), in which the responding vehicle generates payment information based on the payment request information and sends the payment information to the base station, the base station sends the payment information to a payment platform, and the payment platform returns a payment result to the responding vehicle; and a Device-to-Device, D2D, communication step (S700), in which the base station allocates a D2D communication channel to the requesting vehicle and the responding vehicle, and the responding vehicle and the requesting vehicle communicate with each other via the D2D communication channel. a request sending step (S100), in which a requesting vehicle sends a payment request to a base station; a request-based retrieving step (S200), in which the base station retrieves vehicle information of a second vehicle stored in association with the requesting vehicle as a friend vehicle of the requesting vehicle based on the payment request; an encrypting step (S300), in which the base station encrypts payment request information using the vehicle information of the friend vehicle; a broadcasting step (S400), in which the base station broadcasts the encrypted payment request information; a decrypting and receiving step (S500), in which at least one vehicle within a broadcast coverage of the base station attempts to decrypt the broadcasted payment request information using its respective vehicle information, and if one of the at least one vehicle decrypts the broadcasted payment request information successfully, the one of the at least one vehicle, that is the friend vehicle, acts as a responding vehicle and acquires the payment request information; a payment implementation step (S600), in which the responding vehicle generates payment information based on the payment request information and sends the payment information to the base station, the base station sends the payment information to a payment platform, and the payment platform returns a payment result to the responding vehicle; and a Device-to-Device, D2D, communication step (S700), in which the base station allocates a D2D communication channel to the requesting vehicle and the responding vehicle, and the responding vehicle and the requesting vehicle communicate with each other via the D2D communication channel. <EOS>