Yunnan Baiyao does not have the function of treating cancer. Yunnan Baiyao is a common Chinese patent medicine for promoting blood circulation and removing blood stasis (promoting blood circulation and eliminating blood stasis in the body), which has the efficacy of promoting blood circulation and removing blood stasis, promoting blood circulation and relieving pain (relieving pain by removing blood stasis), and detoxifying and subduing swelling. Yunnan Baiyao is mainly used in the treatment of bruises, blood stasis, vomiting blood, coughing blood, blood in stool, hemorrhoidal blood, hemorrhage (excessive menstrual flow or more than a few drops of blood), surgical hemorrhage, ulcers, swollen poisons and soft tissue contusions, closed fractures, bronchodilatation and tuberculosis, coughing blood, bleeding from ulcers, and infectious diseases of the skin, etc. Some patients who take this medicine have a good ability to activate blood and remove blood stasis to relieve pain. Some patients can see allergic rashes, panic, nausea and vomiting, urticaria, chest tightness and other symptoms; pregnant women must be prohibited from taking this drug, so as not to cause miscarriage, hemorrhage and other serious adverse consequences, threatening the patient’s life and health safety. If you need to take this drug, should be under the guidance of a doctor.