Nowadays, BIM technology has penetrated the entire construction industry, from the initial residential and office building projects to large-scale complex complex projects and underground pipe gallery projects, etc. The application of BIM technology in large-scale engineering projects in pipe gallery electrical and mechanical pipes is also a key research direction of BIM technology function. This paper takes Shanghai Haichang Polar Ocean Park as an example to study the comprehensive application of BIM technology in the pipe gallery electromechanical project, which mainly uses BIM technology to review drawings, deepen design, collision inspection and secondary optimization, key and difficult analysis and construction simulation, and then verify the practicability of the BIM technology through actual project. The research results show that BIM technology has great advantages in the design and installation process of pipe gallery and electromechanical project, through BIM technology can avoid ineffective rework and materials waste in the construction phase to achieve the purpose of controlling the project period, saving costs and lean construction, and improving the overall economic benefits of the project.