On the basis of the distinctive structure and performance advantages of dual clutch transmission ( DCT) ,a single-motor full hybrid electric system equipped with DCT is proposed and its kinetic model is constructed.Then,the rule-based method is adopted to analyze the scope of working mode and the schedule of economical shift by taking the optimal system efficiency as the objective,and a comprehensive working schedule of mode switching and DCT shifting is formulated for hybrid electric vehicles ( HEV) .In view of the intersection between mode switching points and shifting points in the comprehensive working schedule,the coordination control strategy and method of mode switching and shifting are proposed.Finally,on the Matlab /Simulink platform,the engine starting and upshifting coordination control while driving is analyzed by simulations.The results indicate that the proposed coordination control strategy of engine starting and shifting while driving is effective in improving the performance of the proposed system,specifically,it can avoid the clash between mode switching and shifting with much less mode switching and shifting time,which means that the structure advantage of the proposed system are fully utilized.