Abstract: With the development of building digitalization, intelligent software has also been developed rapidly. However, the current commercial BIM software on the market does not solve the problem of efficient and accurate reservation of shaped holes brought about by complex electromechanical pipelines in complex projects. Thus causing quality problems and fire hazards. The author analyzes the actual demand and formulates the key technology route. According to the software situation of the current market, the general Revit platform is selected, and the intelligent software of the Mole Elves is developed. It realizes the accurate reservation of wall shaped holes, automatic identification, automatic marking, automatic drawing, and also compares the amount of work before and after opening the holes. The software has been successfully applied in the renovation project of Beijing Workers Stadium, which has achieved good economic benefits and has good popularization.