Radiation-induced cognitive dysfunction （RICD） has an insidious onset and there is a lack of effective prevention and treatment measures. The efficacy of memantine hydrochloride as a classical treatment drug is limited， and it is inevitable to seek multi-target combination drugs. In recent years， the protective effect of vitamin E and vitamin D on cognitive function has been widely recognized. Several basic studies have shown that vitamin E can play a role in the combination of medication by protecting neurons and reducing the adverse effects caused by memantine hydrochloride； Vitamin D and memantine hydrochloride have also become a hot topic of research due to their significant synergistic effects. The combination of memantine hydrochloride and vitamin therapy is expected to bring additional benefits to RICD patients.