The invention provides a line cleaning device for electric power maintenance. The line cleaning device includes an anti-dazzling umbrella device, a de-icing cutter device, a branch cleaning saw device, a brush wire impurity removing brush device, a stable plate, a connecting rod, a connecting sleeve, a line breaking collection wheel device, a connecting sheet, a telescopic rod device, and an antistatic conductive chain device. By arranging a fixing shaft, a primary connecting plate, a secondary connecting plate, a brush sleeve, and a clamp ring, the cleaning of the impurities on the line is facilitated, the rotary cleaning can be realized, and the use is convenient; by arranging a semicircle cutter, a screw rod, and a support rod, the de-icing is facilitated, and the installation and maintenance are facilitated; and by arranging a driven wheel, a saw plate, a driving wheel, a primary motor, a connection plate, and a conveyor belt, the branch breaking is facilitated, and the work of the lines can be prevented from being influenced by the branch wire touching.