The most commonly used drugs to reduce swelling in clinical practice are diuretics, which can be divided into tab diuretics, thiazide diuretics and potassium-protective diuretics, and the strongest effect of these three diuretics is tab diuretics. However, besides using diuretics to reduce swelling, the most important thing is to clarify the causes of edema, such as edema caused by heart disease, cardiac drugs can be used to improve cardiac function. If the edema is caused by hypoproteinemia due to malnutrition, human albumin can be infused to increase the colloid osmotic pressure to achieve a better diuretic effect.