PURPOSE: To provide a mold with a film having improved mold release characteristics, water repellency, oil repellency, lubricating properties, etc., by using a film prepd. by means of an electroless composite plating method.

CONSTITUTION: A mold for molding a synthetic resin material, etc., is prepd. by a method wherein a base material for the mold is immersed in a plating bath wherein fluororesin particles with characteristic shape and dimension are dispersed and electroless plating is performed to co-deposit the fluororesin particles on the surface of the base material of the mold.