Abstract: Simplification and standardization of the high-speed railway simplified contact line aluminum alloy parts, with the characteristics of "three series and one improvement", that is, "unified technical parameters, unified and simplified equipment structure, unified and reduced types of parts, improving the service performance of key parts", is the Chinese standard with completely independent intellectual property rights. At present, this kind of products has been used in the Beijing-Shenyang test section of Beijing-Harbin high-speed railway, Chongli branch line of Beijing-Zhang high-speed railway, Haoji Railway, Yantong high-speed railway and other railway projects; they are stable and reliable, and all indicators are in line with the relevant standards. In this paper, the preparation technology and quality control of simplified aluminum alloy parts are discussed and analyzed from five main aspects, including forging process analysis, solution and aging analysis, machining process analysis, riveting assembly process analysis and quality control points. It reflects the perfection and improvement of the preparation technology and quality control of simplified overhead contact system aluminum alloy parts; and it has laid a solid foundation for the technical reserve of the equipment localization of the catenary system.