The invention discloses a high power laser fiber cladding light stripper. The high power laser fiber cladding light stripper comprises a fiber cladding outer low temperature glass tube, and a first fixed glass tube and a second fixed glass tube which are respectively fixed at two ends of the low temperature glass tube, and further comprises a high refractive index glass tube which is sleeved and fixed outside the first fixed glass tube, the low temperature glass tube and the second fixed glass tube, wherein an outer side of the high refractive index glass tube comprises a corrosion mode stripping portion, and the high refractive index glass tube is made to generate micro cracks so as to leak cladding light. The fiber cladding light is gradually guided to the high refractive index glass tube layer by layer, corrosion outside the high refractive index glass tube is carried out, so light on the high refractive index glass tube is made to scatter outwards, no waveguide is formed on the high refractive index glass tube, and fiber burning caused by heat accumulation does not easily occur; corrosion on the high refractive index glass tube is carried out, corrosion of the light classing is prevented, a problem of easy fiber break existing in a traditional corrosion method is avoided, strength of a corrosion segment is enhanced, and product reliability is enhanced.