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 for MCG diagnosis technology, and based on the specific requirements of the system, designs a scalable service-oriented architecture based on Node.js, relying on the front and back end frameworks of React and NestJS, and JSON Web Token (JWT) authentication, efficiently and conveniently realize data sharing and information interaction among multiple medical institutions. At present, the system has provided 10 hospitals with demonstration, promotion and resource integration of clinical diagnosis solutions of MCG, collected 845 case report forms (CRF), and provided technical support for clinical diagnosis solutions of coronary microvascular disease of domestic innovative MCG from the information platform and service level.