According to the characteristics of railway catenary fittings, in order to shorten the design and manufacturing cycle of forging dies, reduce mold costs and increase the service life of forging dies, a design of quick-change combined forging dies is introduced from the aspects of mold structure, material selection, mold processing and use, etc. Ideas. After production verification, significant results have been achieved. Forging materials are mainly carbon steel and alloy steel with various compositions, followed by aluminum, magnesium, copper, titanium, etc. and their alloys. The original state of the material includes bar stock, ingot, metal powder and liquid metal. The ratio of the cross-sectional area of the metal before deformation to the cross-sectional area after deformation is called the forging ratio. The correct selection of forging ratio, reasonable heating temperature and holding time, reasonable initial forging temperature and final forging temperature, reasonable deformation amount and deformation speed have a great relationship to improve product quality and reduce costs.