The invention relates to platinum (IV) anticancer compounds with a dihydrogen phosphate radical as an axial ligand. The chemical structure of the compounds is shown in the description. In the structure, a carrier group 2A is an ammonia/amine liand, and comprises 2NH3, 1R,2R-cyclohexanediamin, 1,2-bis(aminomethyl)cyclobutane, NH3/cyclopentamine and NH3/cyclohexylamine; and leaving groups 2X are the leaving groups of platinum (II) anticancer compounds existing at present, and comprise 2Cl<->, an oxalate radical, a 1,1-cyclobutanedicarboxylate radical and a propane dicarboxylate radical. Phosphoric acid bonding is helpful for running of compounds to cancer cell nuclei, improving the selectivity of cancer cells, and makes the compounds mediate compound targeting osteocarcinoma and have very strong anticancer effect. The compounds have the advantages of good water solubility and stability, and are highly suitable for being used as anticancer drugs.