The preferred antihypertensive drugs for diabetic patients are angiotensin-converting enzyme inhibitors, such as captopril, enalapril, benazepril, etc.; angiotensin receptor antagonists, such as valsartan, irbesartan, etc., can also be chosen. 1. Angiotensin converting enzyme inhibitors: such as captopril, enalapril, benazepril, etc.. By inhibiting the synthesis of angiotensin, causing vasodilation, to achieve the purpose of controlling blood pressure, but also can improve insulin sensitivity, reduce urinary protein, protect the function of the kidneys. 2. Angiotensin receptor antagonists: such as valsartan and irbesartan. By blocking the binding of angiotensin to the receptor, it weakens the action of angiotensin and plays a role in dilating blood vessels and lowering blood pressure. It also inhibits the activation of the renin-angiotensin-aldosterone system, which reduces the production of aldosterone and reduces sodium and water㶆 retention, and can also play a role in lowering blood pressure. When diabetes is combined with hypertension, go to a regular hospital, use medication under the guidance of a specialist, and monitor blood pressure.