It contains grass wool (made), so it should not be used by pregnant women. The use of the drug has led to allergic drug rash, chest tightness, palpitations, abdominal pain, nausea and vomiting, generalized itching, and urticaria on the trunk and extremities in a very small number of patients. It was found [1] that the analysis of 38 patients who experienced side effects after using Yunnan Baiyao revealed that allergic reactions were predominant, manifesting as anaphylaxis (26.3%) and skin rash (15.8%). The digestive system reactions accounted for 7.9%, mainly manifested as nausea and vomiting, and gastric bleeding. Genitourinary system reactions were dominated by acute renal failure, urinary incontinence and hematuria. Hematologic system reactions are mainly hemolysis, and cardiovascular system reactions are mainly atrioventricular block. There were also overdose toxic reactions (21.1%) with overdose use. Toxic reactions caused by certain components at excessive doses. Yunnan Baiyao contains saponins, two of which are toxic components [2]. In addition, Yunnan Baiyao reduces the number of platelets and affects the coagulation function of the body, thus causing hemolytic and bleeding reactions, the risk of which increases with high doses. Black stools, bleeding gums, flaky skin petechiae, nasal mucosal congestion, and thrombocytopenia have been reported with Yunnan Baiyao.