Abstract：
Based on brick and concrete structure reconstruction practices, introductions are made on underpinning technique of erecting underpinning structure before dismantlement of load-bearing wall, including design scheme of underpinning beam and column and measures for ensuring construction quality and safety during construction. It is found that the construction method of erecting underpinning structure before removing wall could avoid construction difficulties often encountered by reverse construction sequence，ｐｒｏｖｉｄｉｎｇ ｖａｌｕａｂｌｅ ｒｅｆｅｒｅｎｃｅｓ ｆｏｒ ｓｉｍｉｌａｒ ｐｒｏｊｅｃｔｓ.
