A method for reducing baulking of a dual clutch transmission (“DCT”) for a vehicle includes a first engaging step engaging an odd-stage clutch and an even-stage clutch of a DCT in a case of an ignition-on state. An ascertaining step ascertains a range positioned by a shift lever when an engine is cranked after the first engaging step. A second engaging step engages shift gears respectively, after disengaging at least one of the odd-stage clutch and the even-stage clutch depending on the ascertained range position of the shift lever.