ABSTRACT
JugLans regia is the main economic crop in China and an important medicinal plant, which have antibacterial, anti-oxidant, anti-tumor and hypoglycemic effects. It mainly contains a variety of active small molecule compounds such as polysaccharides, flavonoids, phenolic acids, esters, saponins and quinones.It can be used not only for the development of pharmaceuticals or functional foods, but also for its market demand in the food industry with good application base. It is a resource material with great development potential in walnuts. In this paper, the chemical composition and pharmacological effects of walnut were systematically combed, and on this basis, the industrial application and development path were analyzed to provide a basis for the development and utilization of walnut resources in China.