For the diversion and confluence of goods in the assembly line, in the same product production mode of multi station, it is necessary to carry out centralized operation on products, simplify the disadvantages of workers' multi station operation, improve work efficiency and mode, and achieve single point centralized control over product quality. In order to get better maintenance of the automatic assembly line equipment after long-term conveying belt, the following points must be followed: first, the belt and pulley of the accessories of the automatic assembly line equipment should be kept clean and free of oil and water. When installing the belt, check the lower transmission system, whether the transmission shaft and the transmission wheel are vertical, whether the transmission shafts are parallel, and whether the transmission wheel is on a plane. If not, it needs to be corrected.