Abstract: Mechanical and electrical installation engineering has the characteristics of strong versatility, wide span and relatively wide design area.In addition to plumbing, fi re control and power engineering, the electrical and mechanical installation of buildings also involves intelligent engineering such as electrical appliances.In the construction industry, BIM technology, as an emerging technology, has signifi cant advantages in both construction and design. The scientific use of BIM technology can gradually realize reasonable control of material costs, and then optimize and improve the construction process..Based on this, this article mainly studies the application of BIM technology electromechanical installation technology, in order to promote the intelligent development of electromechanical installation engineering.