Abstract: China Railway Group Co., Ltd.adopts a unified technical architecture and standards to build railway enterprise clouds based on cloud edge integration.The China Railway Group adopts multi data centers dispersed at multi locations while railway bureaus build their own operation centers and station edge nodes. Most of existing information systems are migrated to the China Railway Group's data centers and the railway bureausoperation centers in hope of achieving centralized management and integrated application of railway information infrastructure resources. Meanwhile, the railway information network architecture and network resource layout have been further optimized, unifying the network security mechanism, realizing the sharing of network space security resources. To adapt to those new technological innovations of railway information systems, a new generation of operation and maintenance service platform for railway information system is reconstructing. In addition to unified management and integration of various operation and maintenance tools, integration of existing operation and maintenance service platforms, and unified alarm information channels, the basic service support capabilities and upper layer applications are improved to strengthen the centralized management and optimized allocation of information resources and to support the standardized management of operation and maintenance processes. Efficient and convenient technical means are provided for real-time monitoring of resource operation, automated management of operation and maintenance operations, and collaborative emergency response, actively promoting the transformation of operation and maintenance work from decentralized and passive traditional operation and maintenance to centralized and proactive intelligent operation and maintenance.