The force of the forming die is not great during stamping. The utility model relates to the technical field of dies, in particular to a stamping die. The utility model relates to a stamping die, which comprises a die base, an upper slider and a molding structure which are arranged in a sliding way relative to the die base. The molding structure comprises a first molding piece and a second molding piece which are arranged at a certain angle with each other, and the included angle between the first molding piece and the second molding piece forms a molding space. The first molding piece is arranged on the die base, and the second molding piece is arranged at one end of the first molding piece in a telescopic way. It also includes a pressing structure for pressing the second molding part to change the size of the molding space, and the pressing structure is arranged on the upper slider. The utility model relates to a stamping die, which can press a round tube into an angle line, has low production cost, is suitable for small batch production, and can adjust the shape of the angle line.