Yishenyuan oral liquid is a health food jointly developed by Dongfang Yaolin Pharmaceutical Co., Ltd. and Southern Medical University. At first, it was developed according to the instructions of the Health Bureau of the Military Commission and aimed at the health needs of the leaders of the Military Commission. At that time, Professor Zang, the head of the Chinese Medicine Group of the Health Bureau of the Central Military Commission and Lieutenant General of the First Military Medical University, led the expert group and the Health Food Research Institute of Southern Medical University to undertake the research and development tasks. Eight kinds of precious Chinese medicinal materials, such as ginseng, astragalus root, wolfberry fruit, ganoderma lucidum, Polygonum Multiflori Radix Preparata, Poria, Lentinus edodes and tremella fuciformis, are selected, and are made by main processing and production processes such as extraction, separation, purification, filtration, filling and sterilization. Ginsenosides, astragalus polysaccharides and saponins, Lycium barbarum polysaccharides and ganoderic acid can improve immune function; Ginseng, Ganoderma lucidum, Astragalus membranaceus, Lycium barbarum and other traditional Chinese medicines are rich in crude polysaccharides and saponins, which have anti-radiation effects.