2. Modern research has found that Dendrobium has many health-care functions, which can replenish qi and blood, nourish yin and produce body fluid, and at the same time reduce the three highs. Especially in recent two years, Dendrobium has been widely used in diabetic patients, because diabetic patients are deficient in both qi and yin and need Dendrobium to replenish qi and nourish yin. In addition, Dendrobium has the function of improving immune function, so it also has the function of preventing cancer and resisting tumor. At present, Dendrobium is widely used in health care. It is both medicine and food, and can be used to soak in water at ordinary times.