Torque control is the key to control the shift quality in dual clutch automatic transmission system. Based on the analysis of shift process of DCT, a dynamic model of shifting is built, torque and time switch influence on shift quality are analyzed, and a method in which the pressing force of dual clutch is controlled through actuating mechanism to realize the control of shift quality is put forward. Aiming at one type of vehicle mounted with DCT, a simulation model of shift process is built and simulated, and the experimental analysis of shifting control characters is carried out. The results indicate that the control strategy can control shift quality well.