The invention discloses a method for forward direction ventilation flue gas control of a subway tunnel. The method is characterized in that the control method comprises the steps: when detecting that a fire occurs to a train and the train stops in an interval, enabling the ventilation direction formed in the tunnel interval to be consistent with the running direction of the train, and not needing to judge the fire position and the train parking position. The method has the advantages that once the train catches a fire, the longitudinal ventilation direction formed in the interval is instantly consistent with the running direction, the fire position and the train parking position do not need to be judged; the operability of a ventilation mode is improved when the interval fire occurs, the emergency reaction speed is improved, the disaster loss is reduced, the complexity in subway interval flue gas control is reduced, the problem that an intermediate air shaft needs to be arranged for two or more trains in a long and large interval tunnel and the segmented ventilation cannot be implemented can be solved, and the problem of contradiction between smoke control and a signal system and running organization is solved.