The utility model provides a universal workbench for product polishing. The universal workbench comprises a base, a rotating device, an X-axis sliding module and a supporting frame. A product needingto be ground is erected on the supporting frame. By adjusting the X-axis sliding module and the supporting frame, the product is adjusted to the position most suitable for grinding, humanization is achieved, the labor intensity is reduced to a certain degree, meanwhile, during grinding, only the rotating device needs to be rotated, product movement is achieved, grinding is convenient, the productis prevented from being abraded or scratched, and the product is protected.