The cladding light stripper (CLS) is a key device to guarantee the stability and beam quality of high-power all fiber lasers. It is an especially important step to effectively strip the cladding light for all fiber lasers and its engineering. We present a detailed discussion about the latest progress of the fabrication technology of CLS, which is classified three types based on refraction effect, absorption effect and scattering effect. The characteristics of various techniques to manufacture CLS are analyzed. Some suggestions are put forward to achieve high power cladding light strippers with low temperature rise coefficient and high attenuation coefficient in the future.