Low blood pressure after stenting may be due to drug factors, cardiac insufficiency and other reasons. 1. Drug factor: after stent surgery, patients usually need to take antiplatelet drugs, antihypertensive drugs and vasodilator drugs, such as aspirin, bisoprolol, etc. as prescribed by the doctor in order to prevent the formation of thrombus and aggravate vascular embolism, which may lead to drug-derived hypotension when the dosage of drugs is too large. 2. Cardiac insufficiency: After the heart is put into stent, because the cardiac function of the patient has not been restored to the normal level in the short term after the operation, it may cause a drop in blood pressure due to the decrease of myocardial contraction force. Low blood pressure after stenting needs to go to the hospital in a timely manner to clarify the cause of formal diagnosis and treatment. Patients who have undergone stenting need to eat a light diet, take medication regularly, and strengthen physical exercise to enhance physical fitness in order to control their blood pressure.