Abstract: Juglansmandshurica maximis is an important medicinal plant in China with good biological activity and medicinal value. All its leaves,fruit,and skin could be used as medicine. At first the chemical component and medicinal value of its leaves,fruit and skin were summarized.Then this paper further states their values on the basis of research on walnut catalpa volatile oil,quinone compounds,polysaccharides,proteins and flavonoids at home and abroad in recent years.Besides,Juglansmandshurica maxim's medicinal functions such as resisting tumor、resisting inflammation and antibacterial and resisting oxidation were listed clearly,too.It tried to provide a theoretical basis for the development of Juglansmandshurica maxim's related medicinal value and healthcare function.