Which antihypertensive drug is suitable for heart bypass patients should be formulated according to the specific condition, which includes calcium antagonists, beta-blockers, diuretics and so on. The appropriate drug should be selected under the guidance of the physician. Patients with cardiac bypass grafting who are combined with hypertension can choose amlodipine for treatment, which can dilate coronary arteries and increase the blood supply of coronary arteries at the same time of lowering blood pressure. If the heart rate becomes fast after cardiac bypass surgery, oral metoprolol can also be used to lower blood pressure and slow down the heart rate at the same time. After cardiac bypass surgery, if accompanied by cardiac insufficiency, oral diuretics such as spironolactone can be taken to lower blood pressure, which can reduce the load on the heart. After cardiac bypass surgery to assess the patient’s condition, to understand the patient’s specific situation, according to the patient’s situation to develop a treatment plan, choose suitable for the patient’s antihypertensive drug therapy, but the specific use of medication should be in accordance with the doctor’s instructions, under the guidance of the physician to use drugs.