The main component of Yunnan Baiyao is the hemostatic effect, so if the epidermis is broken and there is bleeding, Yunnan Baiyao can be used to stop the bleeding, but before using Yunnan Baiyao must be strictly disinfected before use. If the tissue is deeper, the bleeding cannot be stopped by simple external spraying. For deeper wounds, sutures are usually required to stop the bleeding, and iodophor is required to disinfect the wound before using Yunnan Baiyao to avoid bacterial infection.