The invention relates to a station forecasting method and a station forecasting system of vehicles, in particular to a station forecasting method and a station forecasting system of a subway train. In the method, wind power generated when the subway train runs in a tunnel before pulling in a station is used as a signal for driving a station forecasting device, so as to ensure the station forecasting accuracy. The system comprises a wind wheel, wherein the wind wheel is arranged on a tunnel wall and provided with a rotating shaft, the rotating shaft is provided with a revolution speed transducer, a signal output end of the revolution speed transducer is connected with a signal input end of a control unit, and the signal output end of the control unit is connected with the signal input end of an acousto-optical station forecasting device. The invention mainly solves the technical problem that an existing mode can not simultaneously ensure automatic station forecasting with unmanned operation and station reminding time adjustment according to train running conditions and is beneficial to simplifying the structure of the system and saving the energy source consumption of the system.