The utility model discloses an emitter is clear away to long -range transmission line foreign matter, laser emission unit include carbon dioxide laser, beam collimation ware and shell, it includes canfocus camera module, visible light indicating module, closes bundle ware and wireless communication module, focusing camera module and carbon dioxide laser emitting laser syntropy to aim at the unit,wireless communication module takes the photograph image transmission to the host computer that laser emission unit that camera gathered aimed the position with the focusing, aim the unit and be connected quick installation and the dismantlement that conveniently aims the unit with laser emission unit through fast interface. The utility model discloses it is high to clear away the foreign matterrate of accuracy, do not need that high altitude construction, convenient operation, live -working, safe risk are low, little, the consuming time weak point of manpower and material resource, assemblyand disassembly fast convenient, whole light in weight easily carry.