The efficacy and function of fresh dendrobium is to nourish yin and clear heat (to nourish yin fluid and remove heat), benefit the stomach and promote the production of fluids. Fresh Dendrobium is slightly cold in nature, sweet in taste, and belongs to the stomach and kidney meridians. It is often used in the treatment of deficiency heat that does not go away, dry tongue and mouth, stomach yin insufficiency (deficiency of yin fluid in the stomach), deficiency heat that does not go away after illness, yin deficiency and fire (deficiency of yin essence in the body, resulting in hyperactive deficiency fire), heat illness and injury to the body fluid, thirst, and dry vomiting with little food. Taking fresh dendrobium need to be taken under the guidance of a doctor, warm-heat disease in the early stage of yin has not been injured, wet and warm (feeling dampness and heat caused by warm disease) disease has not been turned dry, spleen and stomach cold (spleen and stomach weak cold), pregnant women are prohibited to take, take the period of light diet, prohibit spicy and stimulating food, so as not to reduce the efficacy of the drug.