Patients with acute coronary syndrome should avoid sex in the acute stage, and whether they can have sex in the stable stage should be decided according to the severity of the disease. Acute coronary syndrome is a clinical syndrome caused by acute ischemia of the myocardium on the basis of coronary lesions, including ST-segment elevation myocardial infarction, non-ST-segment elevation myocardial infarction and unstable angina. There are many triggers for acute coronary syndromes, including sympathetic nerve excitation, increased blood viscosity, and increased myocardial oxygen consumption, all of which may lead to the occurrence and exacerbation of acute coronary syndromes. Therefore, patients with acute coronary syndrome should avoid overwork and overstimulation while undergoing active treatment. Therefore, during the acute stage of acute coronary syndrome and when the obstruction of blood vessels is serious, sexual intercourse must be avoided to prevent the condition from aggravated by over-excitement of sympathetic nerves. Patients with milder symptoms or in the stabilized stage after active treatment can have a proper sex life, but should pay attention to not too strenuous. In daily life, patients should pay attention to eat less greasy food, avoid exertion, prohibit smoking and alcohol, eat less spicy and stimulating food, and go to the hospital for regular review. Due to individual differences, the specific situation should consult a specialist after medical treatment.