Abstract: The potato ridge film mulching furrow planting seeding unit provides the technical support for mechanical planting potato by using ridge furrow collecting rain cultivation technique. It can complete ditching, fertilizing, seeding, ridging,shaping, plastic mulching, film pressing and soil covering operations at one time. Hence, the dry farming agriculture cultivation mode of ridge film mulching furrow planting seeding can be achieved. A folded frame was designed for the unit that can be put into working and transporting positions respectively and the transportation safety of the unit have been improved. Compared with the same type device at home and abroad, the structure of the unit is simple, compact and flexible and the price is low. So it is easy to be manufactured and spreaded.