Yellow marshmallow flower and Centella asiatica are used together to clear dampness and heat, detoxify and reduce swelling. Huangshuwai flowers and Centella asiatica are both Chinese medicines listed in the Chinese Pharmacopoeia, both drugs have the effect of clearing dampness-heat, detoxifying and eliminating swellings, in which Huangshuwai flowers belong to the kidney meridian and bladder meridian, Centella asiatica belongs to the three meridians of the liver, spleen and kidneys, the two drugs can be used together to enhance the efficacy of the medicine, and internally applicable to the dampness-heat congestion, gonorrhea (urination increased, dripping astringent pain), dampness-heat jaundice and other conditions. Pounding yellow marshmallow flowers and Centella asiatica externally is also effective in treating carbuncles, sores and canker sores, as well as red, swollen and painful skin caused by bruises and injuries. Since both herbs are cold in nature, improper use may injure the spleen and stomach, so be careful when using them on people with cold spleen and stomach (spleen and stomach weakness and cold), and pregnant women should also use them with caution. The use of Chinese herbs, need to pay attention to the dosage, the patient should not be used indiscriminately, to avoid affecting the condition, if you need to use the drug must follow the doctor’s instructions.