Abstract: In response to the problems faced by China Railway Jinan Group Co. Ltd. (referred to as Jinan Group Company) in the field of mobile applications, such as numerous platforms, difficult integration, and duplicate authentication, this paper proposed a unified access and management portal architecture for mobile applications. The architecture consisted of an application management platform for mobile application developers and a terminal application portal for users. The application management platform adopted a B/S architecture and was built on the Spring Cloud Alibaba microservice architecture, with the characteristics of easy scalability and centralized management. The terminal application portal utilized native development technologies such as Android, IOS, HarmonyOS to build application integration and runtime environments, and provided standardized access software development toolkits to ensure compatibility of mobile application access across different platforms. The portal architecture adopted centralized management and distributed deployment to implement unified access and centralized management of mobile applications, and improve the standardization and normalization level of mobile applications in Jinan Group Company.