A telegraph pole insulating line protecting plate can solve the problem that because bird nests are erected on an iron tower by birds and bird dung accumulates, an insulating line is broken through, and line tripping is caused. The protecting plate comprises two flat plates connected to the upper ends of insulator strings of a telegraph pole tower cross beam, longitudinal plates are connected to the opposite ends of the two flat plates respectively in the longitudinal direction, openings are formed in the middle segments of the two longitudinal plates respectively in the transverse direction, a support is hinged to the lower end of the opening of one longitudinal plate, a support fastening device corresponding to the support is fixed to the lower end of the opening of the other longitudinal plate, the upper end face of the support is connected with the lower end of a T-type frame through a shaft, the two ends of the T-type frame penetrate through the openings and are longitudinally connected with sweeping frames respectively, the lower ends of the sweeping frames are close to the upper end faces of the flat plates, and one of the two ends of the T-shaped frame is connected with two back-to-back windward spoons. The telegraph pole insulating line protecting plate is simple in structure and high in practicability.