Supporting structure capable of being demounted later

The utility model provides a supporting structure capable of being demounted later, and belongs to the technical field of foundation pit supporting design and construction. Which comprises a foundation pit and is characterized in that supporting piles are arranged on the peripheral side of the foundation pit, a plurality of supports are arranged on the supporting piles on the two adjacent sides up and down, every two supports form a group, a steel support is installed between every two supports in each group, and a steel coupling beam is installed between the centers of the top ends of every two adjacent steel supports at the same height; a steel stand column is installed at the bottom end of the steel support, a building structure beam is transversely installed in the foundation pit, and a building structure plate is installed at the top end of the building structure beam through a building structure column. The supporting structure is simple in structure, construction of a main body is not affected under th