Abstract: In order to address the growing network security threats and data leakage risks of railways, this paper constructed a railway intelligent mobile terminal control platform based on the zero trust concept. The paper elaborated on the overall architecture of the platform, studied key technologies such as port stealth, continuous certification, and data isolation, which provided precise access control and comprehensive terminal security protection for railway intelligent mobile terminals. This platform has been applied to China Railway Lanzhou Group Co. Ltd., it significantly improved its security protection ability and management level for intelligent mobile terminals.