Abstract: With the development of digital medical treatment,requirements of human body CAD modeling are improved.Summarized and analyzed the existing methods of reverse modeling,and proposed a non-feature modeling method based on division of boundary to create human body CAD model,and the general process and the benefits of this approach are detailed.With the reverse modeling software Geomagic Studio and SolidWorks as platform,the advantage of the approach is verified through application and error analysis of the CAD models with in vitro and vivo feature,which has positive significance to achieve accurate and personalized digital medical treatment.

Key words: digital medical treatment, reverse modeling, non-feature modeling, division of boundary, CAD model