Abstract: With the increasingly prominent shortcomings of single application, microservice architecture has been widely concerned by the industry recently. This paper designs a new generation of enterprise portal system based on the architecture of "microservice and micro-application", with the application store as the core, multi terminal applications as the scene, and combined with the cloud platform to build a flexible and adaptive unified workbench. This paper introduces the overall design and key technologies of the new portal in detail, and carries out the promotion and application in 27 provincial grid companies of State Grid Corporation of China. The application results show that the new portal can flexibly and quickly meet the business needs, improve the online office efficiency and experience of users, and the results have a good application prospect.