To provide a method for simply and inexpensively forming a skin on the surface of a base material.

The method for forming the skin in which the base material is immersed in a synthetic resin liquid and is pulled up, and then, the synthetic resin liquid stuck on the base material is solidified is provided. The base material is preferably a foamed polyurethane molded article molded in a mold. In addition, the present invention is the method for forming the skin in which the foamed polyurethane molded article molded in the mold is coated with a sealing agent, and then, it is immersed in the synthetic resin liquid and is pulled up, and then, the synthetic resin liquid stuck on the base material is solidified, is provided. The thickness of the skin is preferably 0.05-2 mm.