The invention discloses a nest blocking device special for a door-type electric pole. The nest blocking device special for the door-type electric pole is reasonable in structure and good in using effect. According to the technical scheme, the nest blocking device special for the door-type electric pole comprises fixing parts, and two centrosymmetric combination bodies are combined into a quadrangular cone. Upper through holes are reserved in the upper portions of the combined combination bodies, wherein the diameter of the upper through holes is the same as that of the electric pole. Lower through holes corresponding to the upper through holes are formed in the lower portions of the combined combination bodies. The fixing parts are arranged at the adjacent portions of the two combination bodies. The fixing parts are hole noses. Bolts and nuts are assembled inside the hole noses. The combination bodies are made of aluminum alloy. The nest blocking device is reasonable in structure, good in using effect and capable of effectively preventing birds from building a nest at the position where the door-type electric pole intersects with a three-dimensional truss cross arm, and normal operation of an electric power circuit is ensured.