Dendrobium, also known as chlorophytum, is the stem of Dendrobium nobile and Dendrobium candidum, perennial herbs of Orchidaceae. Traditional Chinese medicine believes that Dendrobium is cold and sweet, which can enter the stomach and kidney meridians, and has the functions of nourishing the stomach, promoting fluid production, nourishing yin and clearing heat. There are many varieties of Dendrobium. Among them, the iron-green stem is called "Dendrobium candidum", which plays a great role; Those with flat stems and yellow-green stems are called "Dendrobium nobile", and the effect is not good. According to classic records, Dendrobium officinale "is mainly used for traumatology, removing arthralgia, lowering qi, nourishing five internal organs, reducing body weight, strengthening yin, keeping stomach thick for a long time, and prolonging life." "Compendium of Materia Medica" says that Dendrobium "has the functions of clearing stomach, removing deficiency heat and promoting fluid production. Instead of tea, it will stimulate appetite and strengthen the spleen. " Dendrobium candidum is listed as the first of the "Nine Immortals" in Taoist classic "Taoist Collection". There is a folk saying that "wild ginseng strengthens yang and Dendrobium candidum nourishes yin". It is said that people used to feed fresh Dendrobium officinale juice to extremely weak and critical patients, which could make them recover slowly. Therefore, Dendrobium candidum is also called "life-saving fairy grass". Dendrobium is a precious traditional Chinese medicine. 1970, the precious gift that Premier Zhou Enlai gave to Ho Chi Minh, a sick Vietnamese president, was Dendrobium candidum. Mr. Mei Lanfang, a famous Peking Opera performer, often uses Dendrobium candidum decoction as tea to protect his voice. Clinically, Dendrobium is mostly used to treat yin injury and fluid deficiency, dry mouth and polydipsia, anorexia and retching, asthenic heat after illness and blurred vision. Modern medicine has proved that Dendrobium contains more than ten kinds of nutrients beneficial to human body, such as dendrobine, dendroamine and β-sitosterol, which has the functions of relieving fever, relieving pain, lowering blood pressure and promoting gastric juice secretion. So, what diseases can Dendrobium treat? 1. can cure high fever: take Dendrobium15g (fresh Dendrobium 30g), Polygonatum odoratum15g, Ophiopogon japonicus10g, Adenophora adenophora10g and Radix Rehmanniae10g. Firstly, Dendrobium is decocted in water, then other medicines are added and decocted together, and the residue is removed to obtain juice. One dose a day, three times. 2. It can treat night sweats due to yin deficiency: take Dendrobium10g, Cornus officinalis10g, and Schisandra chinensis10g. Firstly, Dendrobium is decocted in water, then other medicines are added and decocted together, and the residue is removed to obtain juice. One dose a day, taken twice. 3. It can cure night blindness: take 30g of Dendrobium, 30g of Epimedium, and 0g of Atractylodes macrocephala15g. Soak rhizoma Atractylodis in rice washing wat, and drying. Grinding the above medicines together into fine powder, and mixing evenly. Take 9 grams of medicine at the end of each time, and take rice soup on an empty stomach three times a day. 4. It can be used to treat liver-fire hypertension: Dendrobium15g, Taxilli15g, Cinnamomum cassia10g and Concha Haliotidis 30g are taken. Firstly, Dendrobium and Concha Haliotidis are boiled in water, then other medicines are added and decocted together, and the residue is removed to obtain juice. One dose a day, taken twice. 5. Can cure dry throat and cough: Take Dendrobium15g, Adenophora adenophora15g, Lily 20g, and roasted Farfara10g. Firstly, Dendrobium is decocted in water, then other medicines are added and decocted together, and the residue is removed to obtain juice. One dose a day, taken twice. 6. It can be used to treat intestinal dryness and constipation: Dendrobium candidum and Ophiopogon japonicus each10g, Scrophularia and Radix Rehmanniae each15g. Firstly, Dendrobium is decocted in water, then other medicines are added and decocted together, and the residue is removed to obtain juice. One dose a day, taken twice. 7. It can be used to treat lumbago and knee pain caused by yin deficiency of liver and kidney: Dendrobium nobile15g, Achyranthes bidentata15g, Chaenomeles papaya15g, Lycium barbarum 30g and Cuscuta chinensis10g. Firstly, Dendrobium is decocted in water, then other medicines are added and decocted together, and the residue is removed to obtain juice. One dose a day, taken twice. 8. It can be used to treat blindness caused by yin deficiency of liver and kidney: Dendrobium10g, Chrysanthemum10g, Semen Astragali Complanati15g, Fructus Ligustri Lucidi15g, and Fructus Lycii 30g. Firstly, Dendrobium is decocted in water, then other medicines are added and decocted together, and the residue is removed to obtain juice. One dose a day, taken twice.