The invention discloses a protection platform for dewatering wells in a deep foundation pit annular supporting and protecting system. The protection platform comprises a berm platform and adhesion platforms, wherein the berm platform is set in the deep foundation pit annular supporting and protecting system, is connected with a current supporting structure of the deep foundation pit annular supporting and protecting system, and is used for maintaining and observing a middle dewatering well in the middle of the deep foundation pit annular supporting and protecting system; the middle dewatering well is arranged on the berm platform; the adhesion platforms are set on the edge of the deep foundation pit annular supporting and protecting system, is connected with the current supporting structure of the deep foundation pit annular supporting and protecting system, and is used for maintaining and observing edge dewatering wells on the edge of the deep foundation pit annular supporting and protecting system; and the edge dewatering wells are arranged on the adhesion platform. According to the protection platform, the berm platform is set as a maintenance observation platform of the middle dewatering well in the middle of the deep foundation pit annular supporting and protecting system, the adhesion platforms are set for the edge dewatering wells on the edge of an annular support, and the edge dewatering wells are fixed to the adhesion platforms, so that the protection problem of the dewatering wells in the deep foundation pit annular supporting and protecting system is solved.