Abstract: Any enterprise cannot attract all the customers in the market, at least not in the same way to attract all customers. The data processing concept of big data technologies, that is about focusing on the whole, efficiency and relevant, not on the sampling, absolute accuracy, cause and effect, etc., provides a strong technical foundation in passenger group analysis. Based on the big data platform of railway passenger transport, this article analyzed the group of railway passengers, studied on the application of group analysis, in order to implement the optimization and adjustment of passenger transportation products and services, enhance railway passenger market advantage. The result of transfer passenger group analysis indicated that it was good for guiding the management, organization, optimization and adjustment of railway passenger transport.