There is no good or bad diuretic, as long as the right drug is used to help the patient’s condition and the side effects are minimized, it will play a very good role, so the choice of diuretics in the clinical setting also needs special attention. There are many kinds of diuretics used clinically, the most commonly used are furosemide, bumetanide, and torasemide, which are more powerful diuretics, but also have obvious side effects, causing hypokalemia, and are potassium-removal diuretics, which diuretic at the same time will also excrete potassium ions from the body. There are also thiazide diuretics, which are also commonly used and have a certain hypotensive effect, but the side effects are also relatively large, affecting the body’s blood sugar, blood lipids, uric acid and other metabolic abnormalities. There is also a potassium-protective diuretic, represented by spironolactone, but it may cause hyperkalemia, so it is necessary to choose the corresponding diuretic for different conditions.