Renal artery stenosis hypertension is mainly caused by renal artery obstruction causing renal ischemia, resulting in the activation of the renin-angiotensin-aldosterone system and causing an increase in blood pressure, which is a kind of secondary hypertension. Patients can be treated as follows: 1, interventional surgery or surgery, the purpose of treatment is to lift the stenosis, lower blood pressure and protect renal function; 2, patients not suitable for interventional and surgical treatment can choose to use ACEI or ARB drugs for antihypertensive treatment, such as commonly used ramipril, coxartan potassium drugs, bilateral renal artery stenosis, renal function is impaired or non-stenosis side of poor renal function patients should not use Such antihypertensive drugs are not recommended for patients with bilateral renal artery stenosis, renal impairment or poor renal function.