How to reduce edema usually depends on the cause of edema, according to the cause of targeted treatment. Clinical causes of edema include nephrogenic edema, hepatic edema, cardiogenic edema, endocrine edema and so on. 1. Nephrogenic edema: common in glomerulonephritis, nephrotic syndrome. Salt should be limited, diuretics such as hydrochlorothiazide and furosemide can be applied to reduce edema through diuresis, and sartan or puri drugs such as irbesartan and captopril can also be applied to reduce urinary proteins and alleviate edema by applying glucocorticosteroids such as prednisone or immunosuppressant such as cyclophosphamide when necessary. 2. Hepatogenic edema: if cirrhosis of the liver can cause edema, it is usually necessary to take hepatoprotective drugs such as polyunsaturated phosphatidylcholine, and diuretics such as furosemide can also be applied to reduce edema treatment. 3. Cardiogenic edema: common in right heart failure, constrictive pericarditis, etc. Diuretics such as furosemide can be applied to reduce edema. 4. Endocrine edema: such as hypothyroidism, etc., need to take oral eugenol and other drugs to reduce swelling treatment. Edema may also have other reasons, if the patient has edema, it is recommended to go to the regular hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.