Basement outer wall single-face formwork erecting system and construction method thereof

The invention relates to a basement outer wall single-face formwork erecting system and a construction method thereof, and relates to the technical field of formwork erecting systems, and the basement outer wall single-face formwork erecting system comprises a bottom connecting device and a formwork erecting device; the formwork supporting device comprises a plurality of supporting formworks and limiting mechanisms, and the adjacent supporting formworks in the horizontal direction are connected through the limiting mechanisms to form a supporting formwork layer; the bottom connecting device comprises an assembling base, a fixing mechanism and a connecting mechanism, the assembling base is positioned on one side of the side wall of a foundation pit used for installing a formwork system through the fixing mechanism, and the adjacent supporting formwork layers in the vertical direction are arranged on the assembling base through the connecting mechanism; the construction method comprises the following constructi