[en] To satisfy the ICF needs of predeuterated polymer foam, the preparation of predeuterated divinylbenzene, which is the requisite predeuterated monomer of fabricating the predeuterated polymer foam, has been studied in this year. By the preparation cost, the yield of final production, and the deuterated ratio, the synthesis route of deuterated divinylbenzene has been determined, which is composed of bromine replacing, hydrolyzing, and Witting alkene. And now by this route, the divinylbenzene cna be synthesized, and some deuterated semifinished products have been fabricated. (author)