There are many methods of diuresis, such as the use of diuretic and dehydrating drugs, such as diuretics, for example, drinking alcohol, especially beer, can also promote diuresis, such as eating some special foods, such as radish, corn husk, red beans and other foods, all have a certain diuretic effect. The most common use is still the use of diuretics. The main function of diuretics is to dehydrate and lower blood pressure, the following categories are common: a. High-performance diuretics, also known as medullary loop diuretics. Commonly there are tachyphylaxis, etc. The main site of action is in the medullary collaterals, inhibiting the reabsorption of sodium ions and playing a drainage role, which can easily cause hyponatremia and lead to gastrointestinal discomfort, with serious side effects of ototoxicity, which also requires special attention in the process of use. The main effect is to inhibit the reabsorption of sodium ions and play the role of drainage and sodium discharge. The main side effect is the damage of kidney function, which can easily cause hypokalemia and hyponatremia. Third, low potency diuretics, also known as potassium retention diuretics. Often used in combination with thiazides. Commonly, there are Antiseptic, etc. It has potassium retention effect and reduces the excretion of potassium, but the side effect is hyperkalemia. In the process of taking it, potassium intake should be controlled, and a low-potassium diet is recommended. Fourth, osmotic diuretics, commonly known as mannitol, etc., use the effect of osmotic pressure to excrete water out of the body. If patients need to use diuretics, it is still recommended to use them under medical advice to try to protect kidney function and avoid damage to kidney function.