The invention discloses a semitrailer traction pin plate, and belongs to the field of semitrailers. The semitrailer traction pin plate overcomes the defect that in the prior art, a traction seat and a traction pin plate are prone to abrasion due to the fact that lubricating grease cannot be stored between the traction seat and the traction pin plate. According to the technical scheme, the semitrailer traction pin plate comprises a traction pin plate body, and the surface of the traction pin plate body is provided with more than one oil storing notch which does not penetrate through the traction pin plate body. The semitrailer traction pin plate is mainly used for fixation of a semitrailer traction pin and support of the traction seat.