Abstract: In order to improve the working efficiency of the transporter in the forest, this paper studies and designs a small forest crawler transporter which can be remotely controlled and automatically adjust the center of gravity according to its own movement posture. The mechanism design of each part of the whole vehicle is completed by theoretical calculation, and the trafficability of the whole vehicle under the control of the adjustable center of gravity mechanism is analyzed, and the control strategy of the adjustable center of gravity mechanism is determined. The simulation results show that after the control of the center of gravity, the machine trafficability is effectively improved, the limit Angle of the machine uphill is increased by 17.9%, the limit Angle of the transverse slope is increased by 18.3%, the limit obstacle height is increased by 18.7%, and the limit width of the trench is increased by 13.9%.