A tree trimming tool for a distribution line comprises a central parallel frame, a central horizontal frame, a central vertical frame, and motor cross beams, wherein the central parallel frame, the central horizontal frame and the central vertical frame are fixedly mounted vertically in pairs; the motor cross beams are fixedly mounted on the two sides of the central horizontal frame; ascent motor fixing seats are mounted on the motor cross beams; ascent motors are mounted on the ascent motor fixing seats; paddles of the ascent motors are fixedly mounted on motor shafts of the ascent motors; vertical inductor fixing seats and horizontal inductor fixing seats are mounted on long beams; vertical inductors are fixedly mounted on the vertical inductor fixing seats; the horizontal inductor fixing seats are equipped with horizontal inductors; a duct fan vertical frame is fixedly mounted at the tail end of the bottom long beam; a duct fan fixing frame is vertically and fixedly mounted on the duct fan vertical frame; an duct fans are fixedly mounted on the duct fan fixing frame. With the adoption of saw blade and inductance detection devices, the tool provides a tree twig trimming function and is convenient to operate and simple in structure.