Lycium barbarum and American ginseng are soaked in water to drink, and used together mainly have the function of benefiting qi and nourishing yin. Among them, Lycium barbarum has the functions of nourishing liver and kidney, nourishing yin, moistening lung and improving eyesight, while American ginseng has the functions of benefiting qi and nourishing yin, clearing away fire and calming the nerves. The combination of the two can strengthen the efficacy of benefiting qi and nourishing yin. It has a certain conditioning effect on stomach pain, hunger, constipation and other symptoms caused by emaciation, dry mouth, dry cough without phlegm, less sticky phlegm or insufficient stomach yin. In addition, because Lycium barbarum also has the function of nourishing the yin of liver and kidney, it can also be used to recuperate symptoms such as backache, dizziness, tinnitus, fever of hands and feet, irritability, hot flashes, night sweats, insomnia and so on. In addition, both of them have the function of nourishing yin, so people who stay up too much or use their eyes too much can also use them, which also has a certain health care effect on their eyes.