The 1JH-110 sweet potato vine killer can be used with four-wheel tractors of 30 horsepower or more. It features a compact structure, good mobility, reasonable layout, stable operation, strong applicability, and simple maintenance. It can complete the cleaning of sweet potato seedlings in one go. The specially designed blades, with high-speed rotation generating negative pressure, suck up the seedlings and then pulverize them. The newly added ditch-clearing shovel can lift up the sweet potato seedlings that are complexly laid at the bottom of the ditch and then pulverize them.