Hybrid vehicles achieve a variety of driving modes by two power sources of engine and motor, while different switches between the power sources have great effects on vehicle dynamics and driving performance. Based on the four-wheel drive hybrid vehicle, the problem that the driving performance deterioration caused by response differences in different power sources during the mode switch process was considered, and a coordinated control strategy of clutch, motor and engine was put forward for the switch of pure electric driving mode to hybrid mode. The strategy controlled the clutch engagement pressure and the motor constant torque compensation, and simultaneously controlled the engine speed through the PID close loop. The bench and real vehicle test results show that the control strategy can achieve a fast and smooth driving mode switch, which leads to improved vehicle drive performance.