Abstract: To address the lack of a global overall perspective in the operation and management of heavy-haul railway freight yards, this paper designed a digital twin management platform for heavy-haul railway freight yards based on the microservice architecture. It constructed a five-dimensional digital twin model for heavy-haul railway freight yards, and developed multiple functions including the panoramic “one-map” display, resource management, scheduling deduction, operation management, and thematic map generation of freight yards. The platform realized transparent, visual, intelligent and refined management of freight yards. The demonstration application in the Haoji (Haolebaoji South-Ji’an) railway freight yards shows that the platform effectively improves freight yard resource utilization, operation safety level and decision-making rationality, and provides practical examples and technical support for the construction of intelligent freight yards.