A follower servotype plastic pipe spreader based on machine vision is designed. The machine was composed of bottom components, front components, intermediate coding components and rear components. Intel Atom D525 was chosen as industrial computer controller. MCS51 was used as the lower machine controller. CCD camera was selected as the device imagine collector. Two fourwire slowdown stepper motor was chosen as the actuator. The location information of the plastic tube was collected by the CCD camera, which is processed by the industrial computer controller and machine controller. Intermediate coding components rotate along with plastic tube, which is realized coding precisely. The machine meets the demand of the industry.