Formwork erecting structure and construction method thereof

The invention relates to a formwork erecting structure. The formwork erecting structure comprises two main formworks which are oppositely arranged; the movable rod is positioned between the two main templates; the fixed blocks are arranged on a rod body of the movable rod at intervals; the plurality of movable plates are sleeved on the rod body of the movable rod and are arranged corresponding to the fixed blocks; one end of the limiting rod is rotationally connected with the movable plate, the other end of the limiting rod is rotationally connected with the inner wall of the main template, and the elevation of the end, connected with the inner wall of the main template, of the limiting rod is matched with that of the limiting rod; the movable plate moves downwards along the movable rod under the gravity of the movable plate and is arranged on the top face of the fixed block so as to drive the limiting rod to rotate in a horizontal state and abut against the position between the movable plate and the main for