The invention discloses a preparation method and application of a triazine compound with a polyvinyl chloride light stabilizing effect, and belongs to the technical field of functional organic molecule synthesis. The key points of the technical scheme are as follows: the triazine compound has a structure; m-aminobenzoic acid with low price is used as an initial raw material, and the triazine compound with a novel structure is obtained through a series of simple and effective synthesis means; the triazine compound obtained by the invention has a good polyvinyl chloride light stabilizing effect.