Abstract: In order to support the demonstration application of domestic innovative medical device magnetocardiography (MCG) in China and promote the systematic display and promotion of clinical diagnosis solutions, this paper designs and constructs a networked, intelligent and standardized information service system of MCG diagnosis technology for coronary microvascular dysfunction. In response to the functional and performance requirements of the system, an efficient and scalable architecture is designed, which is based on the Node.js, supported by the React (frontend) and NestJS (backend) frameworks, and JSON Web Token (JWT) authentication. This architecture enables efficient and convenient data sharing and information exchange among multiple medical institutions. Currently, the system has provided demonstration, promotion, and resource integration of MCG clinical diagnostic solutions for 10 hospitals, with a cumulative collection of 845 case report forms (CRF). It provides technical support for the clinical diagnostic solution of homegrown innovative MCG in coronary microvascular dysfunction from the perspectives of information platform and service.