Phellodendron Bark Capsule has the effect of clearing heat and drying dampness, diarrhea caused by heat and dampness, jaundice, etc. It can be used to treat damp-heat diarrhea (diarrhea caused by feeling damp-heat evil), bone vapor and laborious heat, and jaundice. Phellodendron Bark Capsules belongs to a kind of proprietary Chinese medicine, because this product can play a role in clearing away heat and drying dampness, diarrhea and fire to remove steam, detoxification and treatment of sores and other efficacy. It is clinically used for the treatment of damp-heat diarrhea, bone vapor and labor heat, jaundice, night sweating (abnormal sweating after going to sleep, and sweating stops after waking up), sores and swollen toxins (localized red lumps or hard knots on the skin, limited in scope, with a red, swollen and painful surface, and even pus flowing out of the ulcers). It can also be used to treat eczema, spermatorrhea, pyorrhea (burning and stinging pain in urine is obvious, accompanied by frequent urination and urgency, and discomfort of traction in the lower abdomen), foot fungus, and subluxation of the belt and other conditions. Secondly, about the adverse reactions and contraindications of Huangbai capsule of the population is not clear, but patients must take Huangbai capsule under the guidance of the doctor, should not be taken for a long time. To summarize, patients should not self-medication, so as not to delay the condition, the use of drugs need to strengthen the management of daily life, on time follow-up, so that doctors understand the changes in the disease.