Abstract:The traditional architecture in Lanzhou has strong regional characteristics, especially the dougong. However, this kind of local construction technology is facing the problem of loss in practice. Based on the mutual reference and verification of the craftsman's drawings and material remains, and combined with the craftsman's interview, the construction rules and construction logic of dougong in Lanzhou area are summarized. From the name interpretation to type analysis, establish basic theory of dougong construction in Lanzhou area. For the further construction of Lanzhou traditional architecture construction system to do a good accumulation.