There is no angiotensin-converting enzyme antihypertensive drugs, and angiotensin-converting enzyme-related antihypertensive drugs are known as angiotensin-converting enzyme inhibitors, which are represented by drugs such as captopril, benazepril, enalapril and so on. Angiotensin-converting enzyme inhibitors, antihypertensive mechanism is mainly through the inhibition of circulating and tissue angiotensin-converting enzyme to reduce the generation of angiotensin II receptor, thereby blocking the angiotensin II receptor vasoconstriction, sodium retention, while inhibiting bradykinin so that the relief of the peptide degradation is reduced. The representative drugs of this type of antihypertensive drugs are captopril, benazepril, enalapril and so on. During the use of the drug, pay attention to the presence of irritating dry cough, angioedema, hyperkalemia, pregnant women, bilateral renal artery stenosis, as well as creatinine >265umo / L is prohibited. If there is a need to take angiotensin-converting enzyme inhibitors, it is recommended that they be taken under the guidance of a professional doctor in a regular hospital to avoid unauthorized use of medication.