Dct shifting control method for vehicle

The present invention relates to a DCT shift control method for a vehicle, comprising: a shift start determining step of determining, by a controller, whether a coaxial shift is required or not; a neutralization forming step of changing a current gear into a neutral gear while the controller maintains an engaged state with a clutch, when a coaxial shift is required; a synchronization speed control step in which the controller controls a driving source of a vehicle to synchronize an input shaft speed with a target input shaft speed that is a speed obtained by multiplying a gear ratio of a target gear and the present output shaft speed after performing the neutralization forming step; and a shift completion step of, when the input shaft speed is synchronized with the target input shaft speed, completing gear shift by engaging the target gear with the controller.