The invention discloses a transformer substation protective device and particularly relates to a plug pin type protective pressing board. The plug pin type protective pressing board comprises a base (1), wiring piles (2) and a plug pin pressing board body (3), wherein one end portion and the middle of the base (1) are connected with two wiring piles (2) respectively, two conductive slices (4) extend from the two wiring piles (2) respectively towards the middle of the base (1), the two conductive slices (4) are separated mutually and vertically, a gap is reserved between the two conductive slices (4), a bolt (5) is arranged at the other end portion of the base (1), an abutting board (6) is arranged between the other end portion and the middle of the base, a sliding groove is formed between the other end portion and the middle of the base, and the base (1) is provided with an insulating outer shell wrapping the two conductive slices (4) and the connecting positions of the two conductive slices (4) and an external wire. The plug pin type protective pressing board is safer to operate and more compact in design, saves the space of a screen cabinet, prevents misoperation of a switch and improves working efficiency. When the pressing board is not used for a long time, the plug pin pressing board body can be taken down.