Family farm with reasonable land scale can complete the production with family’s own labor to get higher land productivity and higher income，and can also match the current level of agricultural social service.So family farm is one basic selection on the new agricultural business entities.Service-oriented cooperatives have greater growth base compared with product-oriented cooperatives，so it is one important choice on the new agricultural business entities.Enterprises with strong capital and technical strength，has a unique advantage for the reform of modern agriculture.But Enterprises do not have the advantage of grain producing fields，as the lands costs and management costs are higher than others.However，the enterprises have the competitive in the non-grain producing fields and processing & marketing of agricultural products.And how to make enterprises contact with farmer closely is the key point on the role of business.