The Agricultural machinery 4useries harvester of yams are suitable for potatoes, sweet potatoes. Garlic and other root crops, it is composed of components such as cutting seeding organization, field wheels, girders, excavating, a shovel, transporting chains, choosing sieve, they can integraly complete the working procedures such as harvesting, excavating, choosing, the series include the middle drive transmission and the left-side drive transmission for different types of tractors.