With the rapid development of computer aided technology and destruction of traditional buildings, using computer technology for digital protection of traditional buildings shows its superiority and necessity. However, most related researches are carrying out by certain software currently, it has serious limitations. In this paper, the authors introduced the establishment of traditional building database based on open BIM technology which is carrying out in South Korea, emphasized the information exchange part by IFC property set in this project, because there are great similarities between China and South Korea on traditional buildings, It is hopeful to provide some suggestions and methods to the related works.