Oral proprietary Chinese medicines have long been considered a class of agents that are safe to use and have few adverse reactions. In recent years, there have been more reports on adverse reactions to proprietary Chinese medicine injections, but fewer reports on adverse reactions to oral proprietary Chinese medicine. Compound Danshin Tablets are included in the scope of National Basic Medical Insurance Drug Catalogue and are clinically used for the prevention and treatment of coronary heart disease and angina pectoris with definite efficacy. The prescription of Compound Dan Shen Tablets consists of Dan Shen infusion, Panax notoginseng powder and ice chips, with Dan Shen as the ruler, Panax notoginseng as the subject drug and ice chips as the adjuvant. The main adverse reaction of Compound Dan Shen Tablets is allergic reaction. Compound Dan Shen Tablet consists of Dan Shen infusion, Panax notoginseng and ice chips, of which ice chips are processed products of borneol resin and have antigenic properties. Danshen can trigger hypokalemia. Clinically, the older the patient is and the longer the medication is used, the higher the incidence of hypokalemia, which may be related to renal arteriosclerosis in the elderly. Mainly: allergic reactions (skin edema, scattered red papules all over the body, severe asthma symptoms, itchy lips and nostrils, red foam), electrolyte disorders (abdominal distension, weakness and other manifestations of potassium deficiency), digestive system (fresh blood in the whole mouth, blood in sputum), hematological system (bleeding spots, low platelets), circulatory system (heavy sweating, chest tightness, shortness of breath), urinary system (soy sauce-colored urine with back pain, fever).