Calamus efficacy and function of the taste of pungent, slightly warm, ① "This scripture": "pungent, warm. ② "another mouth record": "non-toxic. (3) "Pharmacognosy": "taste bitter and pungent, non-toxic. The role of Chinese medicine calamus calamus contains volatile oil, the main component of the oil is β-fine ether, α-fine ether and so on. It also contains amino acids, organic acids and sugars. It has a central inhibitory effect, and the active ingredient is mainly β-fine ether. Its aqueous decoction can relieve the spasm of gastrointestinal smooth muscle, promote the secretion of digestive juices, and stop the abnormal fermentation of gastrointestinal. The volatile oil can relieve the spasm of trachea and ileum of isolated guinea pigs caused by acetylcholine, histamine or 5-HT, and inhibit the growth of hepatocellular carcinoma and sarcoma S180 in mice. The high concentration of the extract has an inhibitory effect on common pathogenic skin fungi. Some studies believe that β-fine ether has carcinogenic effects. Lotus leaf contains Roemerine, Pronuciferine and Nuciferine and other alkaloids and vitamin C. It has the effect of clearing heat and removing toxins, cooling blood and stopping bleeding. Lotus leaf therapeutic effect: lotus leaf taste bitter, pungent, slightly astringent, cool, to the heart, liver, spleen meridian; clear aroma of ascending and dispersal; with summer heat and dampness, strengthening the spleen to promote Yang, dissipate blood stasis and stop the efficacy of hemorrhage; the main treatment of summer heat and thirst, headache and dizziness, edema, food and abdominal distension, diarrhea, leucorrhea, prolapse of the anus, vomiting, epistaxis, hemoptysis, hemorrhage, leakage, post-partum, injury to the unclean, stasis of blood. Since ancient times, China has regarded the lotus leaf as a good medicine for slimming. This is because the roots, (lotus root) and leaves of the lotus have a simple diuretic and laxative effect. There is no white scape, only Angelica dahurica, white peony and the like.