A method of correcting a clutch characteristic of a DCT may include a torque situation determining step that determines whether a torque is applied to any one or both of a first clutch and a second clutch, a slip determining step that determines whether an amount of slip of a clutch receiving the torque is equal to or more than a predetermined reference value, and a correcting step that corrects a T-S curve of the clutch in accordance with situations determined in the torque situation determining step, if the amount of slip of the clutch is equal to or more than the predetermined reference value.