With the development of technology,building informatization and industrialization are the development direction of the industry in the new era.The application of BIM technology in the construction of building systems can ensure the quality,but there are still problems in the actual application of prefabricated processing and construction.For this reason,the paper starts from the introduction of HVAC system water system and wind system design module,explaining the module composition.The integrated design method of HVAC system using BIM technology is explained from three aspects:design platform development,application process in different scenarios and practical application cases,in order to meet the practical requirements of assembly-type operations in the new era.