The invention relates to a preparation method of a polymeric material for tribromobenzoic acid. Hydroxyapatite, 1,1,1,3,3,3-hexafluoroisopropyl acrylate, 1,1'-phenylsulfonyl-4,4'-diallyl ether, methyl3-(trimethylsilyl)-4-pentenoate, dimethyl (3-oxo-1,3-dihydroisobenzofuran-1-yl)phosphonate, cyclopentadienylrhenium tricarbonyl, ammonium persulfate, sodium dodecyl benzene sulfonate and water are added to a reaction kettle in parts by weight, stirred uniformly and heated for a reaction, a product obtained after the reaction ends is filtered, washed and dried, and the polymeric material for tribromobenzoic acid is obtained.