In view of the characteristics of historical building reconstruction, this paper analyzes the difficulties existed in the historical building reconstruction, and studies and summarizes the technical route of BIM application in protection of historical buildings, which introduces the BIM technology into protection and renovation of historical buildings. The paper investigates the application of BIM technology in the historical buildings, and discusses through case studies how to comprehensively improve the feasibility of BIM application in historical building protection and reconstruction in accordance with current production management methods.