Abstract: In view of low level of sweet potato planting and harvesting mechanization in Zhejiang province，a new type of four wheeled low-power moving chassis was designed.It configured great circle arc groove surface configuration of digging shovel and wheeled fertilizer applicator.Sub soil ridging forming device was designed.Potato production joint operation equipment was integrated.This machine was suitable for red clay and mountainous area.And it has great significance to promote sweet potato production mechanization in southern China.