PURPOSE: To obtain a synthetic resin molding capable of being assembled without considering the surface and rear of the molding.

CONSTITUTION: Molds 11, 12 are filled with a synthetic resin material and the synthetic resin material is compressed at high temp. to form a molding having the same shape as the cavity of the molds. Subsequently, compression is released and an ejector pin 19 is made to protrude from the surfaces of the molds to take out the molding from the molds. In this molding method, the position of the ejector pin is arranged in opposed relation to the surface area convered with other member when the molding is assembled and the molding is pressed by the ejector pin.