The invention discloses a mild steel damper for an included angle position or a column foot position of a beam column node and belongs to the field of shock resistance of constructional engineering structures. The mild steel damper for the included angle position or the column foot position of the beam column node comprises an energy consumption steel board, a vertical connection steel board and a horizontal connection steel board. The structural shape of the energy consumption steel board is designed to be in the shape of a right triangle, and a panel of the energy consumption steel board is provided with a round hole. One right-angle edge of the energy consumption steel board is connected with a vertical connection steel board which is vertically arranged, and the other right-angle edge of the energy consumption steel board is fixedly connected with the horizontal connection steel board which is horizontally arranged. The vertical connection steel board is fixedly connected with the horizontal connection steel board. The mild steel damper mainly aims at solving the problem that the included angle position and the column foot position of the beam column node of a frame structure are subjected to shock damage; the mild steel damper is simple in structure, novel in design, good in flexibility and easy to manufacture, has certain economic and use value and can be widely applied to the field of shock resistance of civil engineering structures.