The present invention discloses a polyvinylidene fluoride film functional anthraquinone, a method of preparing the same, and an application thereof, employing ready occurrence of a grafting reaction occurring as a result of free radicals accumulating on a surface when a polyvinylidene fluoride film material is exposed to high-energy ultraviolet radiation. Under an ultraviolet radiation, an anthraquinone compound is immobilized on polyvinylidene fluoride by steps of preparing the polyvinylidene fluoride film, preprocessing the film, and grafting the polyvinylidene fluoride film under ultraviolet light, so as to effectively resolve a problem in a conventional fixation method in which anthraquinone substances easily separate from a carrier. The resulting modified polyvinylidene fluoride film can effectively facilitate degradation of high-concentration nitrogen-containing wastewater, and specifically, degradation of printing and dying wastewater, and has favorable application prospects in the field of wastewater processing.