The invention relates to a vinasse/PBS (polybutylene succinate) composite material and preparation thereof. The vinasse/PBS composite material is prepared from the raw materials including vinasse, polybutylene succinate (PBS), glycerine and the like via pre-treatment, proportioning, mixing, forming, dicing and other treatments. The novel composite material prepared by the method disclosed by the invention can be used for carrying out adsorption purification treatment on a thorium waste solution in the nuclear industry and the like.