Both Centella asiatica and Succinum sativum have the efficacy of clearing heat and removing dampness (removing heat and dampness in the body), detoxifying and subduing swelling, but their functions are different, in which Centella asiatica can be used in the treatment of damp-heat jaundice, carbuncle, swollen sores and poisons; while Succinum sativum can be used in the treatment of gonorrhea and edema, carbuncle, swollen toxins, and scalded by water and fire. Centella asiatica is bitter, pungent and cold in nature, with the efficacy of clearing away heat and inducing dampness, detoxifying and subduing swellings, it can be used in the treatment of damp-heat jaundice, stonelike gonorrhea (discharging of gravel during urination, or sudden interruption of urination, pain in urethra, intolerable pain in the waist and abdomen), haemolymphatic gonorrhea (the appearance of blood in urine accompanied by a painful sensation), carbuncle, swelling, sores, and bruises, and the treatment of other diseases. The adverse effects and contraindications of this drug are not clear. Huangshuqian flower is sweet in taste and cold in nature, with the effect of clearing dampness and heat, subduing swelling and detoxifying, it can be used internally for the treatment of dampness-heat congestion, gonorrhea and edema, and externally for the treatment of carbuncle and gangrene, and scalded by water and fire. The adverse effects of this drug are not clear, but pregnant women should be used with caution. It should be noted that the above two medicinal herbs are cold in nature, so people with cold spleen and stomach (spleen and stomach weakness and cold) should be used with caution, the specific use of Chinese herbs should also be under the guidance of the physician to identify the evidence.