Abstract: With the increasing demand for water conservancy modernization, in order to solve the problems of poor universality, low reuse rate and difficult software product update and maintenance in the development of water conservancy simulation calculation model software, focusing on the objectives of high reliability, high availability and virtualization, this research builds an integrated multi model cloud platform based on cloud computing, microservices and other technologies, combined with Spring Boot development architecture. The model cloud platform provides corresponding microservices and GUI interactive operation schemes for different business users to realize the cloud computing of the model. Taking the middle and lower reaches of the Yellow River as a demonstration basin, integrating one-dimensional and two-dimensional hydrodynamic models, hydrological model and artificial intelligence model, the model calculation results of the cloud platform are displayed to verify the effectiveness and practicability of the model cloud platform.