Abstract: This paper introduces the full scale fire test process of ordinary wooden structure room and wooden structure room treated by vacuum pressure impregnation flame retardant method, and obtains the test results of better fire resistance of wooden house treated by vacuum pressure impregnation flame retardant method. Based on the test results, this paper discusses the application of vacuum pressure impregnation flame retardant method in the construction of a new antique wood structure buildings project and the relevant protective surface practices, and obtains the conclusions that the flame retardant liquid has strong permeability to wood components and panels under the condition of vacuum pressure impregnation flame retardant method, and strict construction technology should be observed in the construction process, etc..

Key words: flame retardant method; antique building; wood structure buildings