To study the wheel vehicle in moutain orchard and improve the stability of the transport operation,the power control of a target system was constructed and tested.A control system hardware was built in accordance with independent power control strategy and control combined transport physical structure.After completing the system hardware,no-load test without system control and load test under the control system dynamic stability control was conducted.Results showed that the engine output power increases and offsetting the non-pit part of the wheel rolling resistance when the throttle opening increases.In the same driving resistance conditions,with the greater the throttle opening,the greater the wheel speed.At last,the absolute error range of the steady state wheel speed was between 0.178 1 km/h and 0.396 1 km/h with the relative error range of 0.71% to 5.27%.The experimental results show that the power wheel speed control achieves the target setting.After one pit in the power wheel of the transport vehicle,the speed of power wheel without pits can be adjusted to increase the power,which helps the truck to walk or trap in the muddy road.Of the situation there is enough power to climb out.