Based on agronomic requirements of the garlic harvest, one kind of garlic harvester for split was designed. It included garlic seedling shear and garlic mining which configured in the front and rear of the tractor. It can complete garlic stems shear, garlic mining, garlic soil separation once a time. The garlic vine and garlic stack respectively to facilitate the collection and transport. Garlic was collected with a string bag directly after drying, to avoid leakage and save time and venue. Eccentric linkage vibrated the mining shovel, reduced the traction resistance and reduced energy consumption. Eccentric institutions as well as digging shovel motion simulated and analyzed by Pro/E，so that the whole structure and motion parameters were optimized and laid the foundation for the prototype trial.