With the housing parts production of Company A as an example, combines unit production with one piece flow production and designs team unit mode. Chooses a simple miniaturized production equipment and puts six-axis in a line; Sets cleaning-welding-rolling equipments into a U-shaped layout; Uses conveyor belt transport between six-axis and cleaning machine and a hoist to link the process of cleaning-welding-rolling; In one piece flow production unit, considers the balance of the device productivity and the balance of unit members working efficiency. Though the production mode reduces the stock of semi-manufactured goods and improves production efficiency, it exists problems of work in process quality detecting, small lot production retooling and versatile workers cultivating，and it needs to be further improved in practice.