The invention relates to a connecting structure between the end board face of a daughter board and a metal wire capable of being designed into a tubular head, in particular to a transformer substation board type fitting suitable for mechanical arm operation and a using method.An upper mother board end fitting body of the fitting is provided with a round hole connected with one end of a round pipe.A lower mother board end fitting body comprises four long U-shaped press boards and two short U-shaped press boards, the four long U-shaped press boards are symmetrically distributed at the end, connected with the round pipe, of the upper mother board end fitting body, the two short U-shaped press boards are symmetrically distributed at the end, connected with the round pipe, of the upper mother board end fitting body, the two short U-shaped press boards are located in the middle of the upper mother board end fitting body, and the four long U-shaped press boards are evenly distributed on the two sides of the two short U-shaped press boards.A daughter board end fitting body comprises a horizontal face board, a vertical face board and a rotary knob, wherein one end of the vertical face board is connected with one end of the horizontal face board, and the rotary knob is connected with the other end of the round pipe.By means of the transformer substation board type fitting, the disassembling and assembling difficulty of the board type fitting is lowered, and the working efficiency of disassembling and assembling of the fitting can be easily improved.