Antihypertensive drugs for reducing edema are divided into tabular diuretics, thiazide diuretics and potassium-preserving diuretics. The common tabular diuretics are furosemide, torasemide, bumetanide, etc. It is a more potent diuretic commonly used in clinics and commonly used in patients with renal failure, cirrhosis of the liver and heart failure. The diuretics need to be applied under the guidance of a doctor, because long-term use of the diuretics will lead to patients with hypokalemia, hyperuricemia and other adverse reactions, allergic to this type of drug is prohibited, hypokalemia, anuria, and azotemia patients are prohibited from using, the use of drugs need to test the patient’s blood ions, as well as liver and kidney function; Thiazide diuretics are commonly used, such as hydrochlorothiazide and indapamide, etc. The application of this kind of diuretics also needs to be applied under the guidance of doctors, and the blood biochemical indexes should be monitored regularly, otherwise, it will lead to ionic disorders and abnormalities of liver and kidney functions. Potassium-preserving diuretics are common, such as amiloride, aminopterin, spironolactone, etc. This kind of diuretics has the effect of preserving potassium, and the use of this diuretic will increase the blood potassium, so the application of this diuretic should be tested for the ionic indexes of the blood. This product is mainly used in edematous diseases, and at the same time, it can prevent hypokalemia, the adverse reaction is that it can cause hyperkalemia, it is forbidden to those who are allergic to this product, and pregnant women should be careful with it. Since there are many antihypertensive drugs for edema and have certain side effects, they should be used reasonably under the guidance of a doctor.