Yunnan Baiyao plus vinegar external application has no obvious therapeutic effect on acne. Complexion (sebaceous cyst) does not belong to the scope of Yunnan Baiyao external indications, and there is no clinical basis for external application of vinegar. The efficacy of Yunnan Baiyao is to dissolve blood stasis to stop bleeding, activate blood circulation to relieve pain (by removing blood stasis to relieve pain), detoxify and eliminate swelling. It is used for bruises, blood stasis, swelling and pain, all kinds of bleeding, sores, swelling and poison, as well as skin infectious diseases, and should be taken orally when used for skin infectious diseases. Powdery mildew is a cyst formed by sebaceous gland excretion obstruction, and does not belong to skin infectious diseases, only when secondary infection belongs to skin infectious diseases, at this time the application of Yunnan Baiyao should be taken orally, should not be applied externally. Powdery skin tumor is easy to secondary infection, found powdery skin tumor should be selected as soon as possible after surgical treatment, so as not to delay the condition.