Application of BIM technology in decoration engineering is significant for the complete application of BIM technology in the full process of green building construction.Currently, in the application of BIM technology into decoration engineering, CAD documents should be imported into Revit as a reference.In current engineering practice, there are a great number of CAD document's data, and these data are very complicated.When these documents are imported to Revit, errors are frequently found, which results in low efficiency.Based on her practice, the author summarizes different problems met when importing CAD files, makes tentative pretreatment methods to solve these problems, and proposes operation procedures, which might be used as a reference for BIM engineers in decoration engineering.