Abstract: This article studied and summarized on the S1000D standards and technical data of EMU, analyzed the methods and advantages of S1000D standard for structural coding management of EMU data. Combining with the actual use of the technical data of EMU, using S1000D standard to carry out structural coding analysis of existing technical data, the article preliminarily established a set of easy to operate and use EMU data structure coding solution, formulated data module coding and information control code of EMU technical data. It was hoped that China would gradually develop its own structural coding standards for high-speed railway technology.