Aiming at the problem of the removal and polishing of the burrs of cylindrical tubular injection molded parts during the production process, a PLC-based robot workstation for the removal and polishing of injection molded parts was designed. The design of the overall structure of the robot workstation was introduced. The contradiction matrix in TRIZ theory was used to solve the technical contradiction in the design process. The design of the PLC control system hardware and software of the robot workstation was designed. The robot workstation has simple structure and convenient control, and finally the edge removal and polishing of injection molded parts are realized, which meets industrial needs.