Abstract: The mechanical equipment in building construction can meet the needs of on-site operators for water, electricity, fire and other energy in the early stage of the project, and provide necessary mechanical support to complete some high-intensity construction tasks instead of manual work Therefore, it can not only improve the overall quality of the building, but also help to comprehensively promote the project progress and meet the construction requirements of higher standards. However, correspondingly, the installation of mechanical equipment needs to be constructed according to the standard operation process, otherwise it will not promote the construction project, but will endanger the life safety of on-site personnel and cause extremely serious negative impact. Therefore, this paper analyzes the key points of mechanical equipment installation in construction, hoping to further highlight the application value of mechanical equipment in construction engineering.