The work aims to improve the production efficiency and flexibility of the sorting and packaging workstation, and explore the use of virtual simulation technology for validation in early design. With the production of chocolate chip cookies in a food company as an example, a robot sorting and packaging simulation workstation was proposed by combining conveyor belt tracking and visual recognition technology. Under the development environment of ABB's off-line programming and simulation software Robotstudio, the 3D modeling of related equipment was carried out, and the space layout of the workstation was completed according to the task requirements. After that, the steps of creating the conveyor belt, designing dynamic Smart components, connecting workstation logic, enabling the tracking function of the conveyor belt, recording camera data, and programming robot control program were required. Finally, the structure of the workstation was analyzed and the parameter setting formula of cycle time was obtained. The workstation could dynamically track the cluttered materials on the continuous moving conveyor belt and complete the sorting and packing task, and could adjust the parameters according to the theoretical calculation method to meet the demand of production rhythm. The workstation achieves the expected functional objectives and can provide reference for the research on efficient and flexible production of robot centered sorting and packaging systems in all walks of life.