Foundation pit inner wall supporting structure and construction method

The invention relates to a foundation pit inner wall supporting structure and a construction method, and belongs to the technical field of building construction. The foundation pit inner wall supporting structure comprises a plurality of supporting stand columns and unit vertical plates, the supporting stand columns are fixed to the inner side wall of a foundation pit, the unit vertical plates are located between the adjacent supporting stand columns, the adjacent unit vertical plates are detachably connected, the unit vertical plates are detachably connected with the supporting stand columns. According to the foundation pit inner wall supporting structure, the supporting stand columns and the unit vertical plates which are detachably connected are arranged, in the foundation pit construction process, the unit vertical plates can be assembled, the construction time for installing the foundation pit supporting structure is shortened, and the construction speed of the foundation pit supporting structure is incr