The main purpose of Yunnan Baiyao is to stop bleeding, especially in the early stages of bleeding. However, not all bleeding wounds are clinically treated with Yunnan Baiyao, for example, when there is active bleeding, a clear arterial or venous bleeding, or a large amount of bleeding, when ligation or suturing is usually used to stop the bleeding. The use of Yunnan Baiyao to stop bleeding is indicated for capillary bleeding and hemostasis of the wound. Before using it, the wound needs to be cleared and the surrounding area cleaned to avoid secondary bacterial infection, and then Yunnan Baiyao is applied to stop the bleeding.