Asiatica, also known as horseshoe, is the whole grass of the umbelliferae plant Asiatica. Bitter, bitter, cold. It has the effect of clearing heat and dampness, detoxification and swelling. The main active components of Asiatica are Asiatica side, hydroxy Asiatica side, snow oxalic acid and hydroxy snow oxalic acid. Centella asiatica has long been used as a brain tonic, diuretic and as an adjunct to leprosy, ulcers and skin diseases.