In the construction of mechanical and electrical engineering,there are many mechanical and electrical specialties,mechanical and electrical equipment and lines are more complex,and the mechanical and electrical construction technology is more advanced,which brings great difficulties to the construction management of mechanical and electrical engineering.Based on this,BIM technology must be applied to the building model,the building structure must be optimized and designed,and the unified and coordinated management of the building must be realized to ensure the construction quality of mechanical and electrical engineering.The simulation and display process of BIM technology is used to show the intricate steps in the construction of mechanical and electrical engineering,and at the same time,it can also enable construction management personnel to better understand the construction process,reasonably optimize mechanical and electrical equipment and lines,so as to prepare for the subsequent work and improve the construction efficiency of mechanical and electrical engineering.