Civil engineering foundation pit supporting structure

The utility model relates to the technical field of building construction, and discloses a civil engineering foundation pit supporting structure which comprises supporting plates tightly attached to the side wall of a foundation pit and a plurality of supporting bodies arranged in the foundation pit, and the two ends of each supporting body are connected with the adjacent supporting plates; each supporting body comprises a plurality of supporting columns which are sequentially spliced end to end in the length direction of the supporting body, a positioning column is arranged at one end of each supporting column, a positioning groove is formed in the other end of each supporting column, each positioning column is matched with the adjacent positioning groove in an inserted mode, an adjusting column is arranged at the end of each supporting body, and the adjusting columns are matched with the positioning grooves in an inserted mode. The adjusting columns are detachably connected with the ends of the adjacent pos