The correct use of Yunnan Baiyao is generally not harmful, Yunnan Baiyao adverse reactions are: a very small number of patients taking the drug led to allergic rashes, chest tightness, panic, abdominal pain and so on. Yunnan Baiyao, used for bruises, bruises and pain, vomiting blood, coughing blood, blood in stools, hemorrhoidal blood, collapse (excessive menstrual flow or more than a few drops) blood, sores, swelling and poison and soft tissue contusion, closed fracture, bronchial dilatation and coughing up blood from tuberculosis, bleeding ulcer disease, and infectious diseases of the skin. Adverse reactions to Yunnan Baiyao: a very small number of patients after taking the drug led to allergic rashes, chest tightness, panic, abdominal pain, nausea and vomiting, the whole body itchy, trunk and limbs and other parts of the urticaria. It is contraindicated for pregnant women. Within one day of taking the medicine, avoid eating fava beans, fish and cold and sour food. If there is any discomfort, it is recommended to consult a doctor promptly. If medication is needed, it should be identified by a doctor and follow the doctor’s instructions for standardized treatment.