This paper summarizes the demands and significances of the BIM application in the inspection of existing buildings.Considering the common features in expressing content and forms of the BIM technology and existing building inspection, the application integration of BIM-based inspection of existing buildings are discussed in details, which, in other words, means using BIM models as carrier for the inspection reports of existing buildings.Simultaneously, the difficulties of the application are discussed and the corresponding solutions are also given.The results can be used as references for engineers and scholars for future studies.