Abstract: As an advanced integration management platform of building information, BIM has been widely used in the international construction market, and is promoting unprecedented reforms in the construction industry. However, there are still many risks involved in the application of BIM technology in construction projects, such as legal and policy risks, industry risks, organization management risks, technology risks, economy risks, etc. Based on previous studies, the risks are summarized, and the main influential factors of BIM application risks and the causal relationship between different factors are analyzed depending on DEMATEL method. On one hand, a conclusion is drawn that most risks of BIM application lie in the investment income uncertainty of the enterprise from the centrality aspect. On the other hand, it can be concluded that the main factors from the reason degree are the BIM standard, guide defect and lack of domestic BIM software. Finally, some suggestions are provided to reduce the risks of BIM application, such as perfecting the BIM standards and application guidelines, strengthening the BIM technology research and development, improving the BIM contract management and business process, and building BIM professional team, etc.