The invention provides a subway train-ground wireless transmission system which comprises a control center, a first wireless transreceiver and a second wireless transreceiver, wherein the first wireless transreceiver is arranged in a station and based on a coding orthogonal frequency-division multiplexing transmission technique; the second wireless transreceiver is arranged in a train and based on the coding orthogonal frequency-division multiplexing transmission technique; the first wireless transreceiver comprises a first base station receiver and a base station transmitter, the first base station receiver is used for receiving signals at a first frequency, and the base station transmitter is used for transmitting the signals at a second frequency; the second wireless transreceiver comprises a first train transmitter and a train receiver, the first train transmitter is used for transmitting the signals at the first frequency, and the train receiver is used for receiving the signals at the second frequency; and the first wireless transreceiver is connected with the control center through a local area network, and communicates with the second wireless transreceiver. Without the arrangement of a plurality of wireless routers, the manufacturing cost is lowered.