The utility model aims to provide a light beautifying device which comprises a light source assembly, a contactable phototherapy assembly and a light guide assembly, the light source assembly can emitlight with one or more specific wavelengths and is used for illumination during illumination therapy, and a light source of the light beautifying device can be an LED light source; the conduit assembly is arranged between the phototherapy assembly and the contactable phototherapy assembly and is used for conducting emergent light subjected to shaping and beam shrinking by the shaping and beam shrinking module in the light source assembly to an optical fiber layer in the contactable phototherapy assembly so as to provide phototherapy for a user applying the contactable phototherapy assembly and realize illumination physiotherapy on the skin of the user; wherein the light guide assembly has good thermal insulation and electrical insulation, so that the safety problems of electric leakage and the like and side effects caused by an electric leakage lamp do not exist in the using process of the light beautifying device; the light beam shaping module in the light source assembly can shape and shrink the emergent light emitted by the light source module in the light source assembly so as to improve the light conduction efficiency.