Diuretics are mainly diuretics, which are a class of drugs that act on the kidneys to increase the excretion of electrolytes such as sodium and chloride as well as water. Diuretics are divided into six categories of diuretics according to different diuretic principles, of which the representative drugs are acetazolamide, hydrochlorothiazide tablets, furosemide tablets, amphotericin tablets, spironolactone tablets, mannitol and so on. Diuretics are a class of drugs that promote the elimination of water and electrolytes from the body, thereby increasing urine output to achieve fluid balance. Diuretics accomplish their task of increasing elimination mainly by affecting glomerular filtration, tubular reabsorption and secretion. According to the different sites of action, chemical structures and mechanisms of action of diuretics, they can be classified as carbonic anhydrase inhibitors, medullary diuretics, thiazides and thiazide-like diuretics, potassium-preserving diuretics, aldosterone antagonists, and osmotic diuretics. The representative drugs are acetazolamide, furosemide tablets, hydrochlorothiazide tablets, amphotericin tablets, spironolactone tablets, mannitol and so on. The use of diuretic decongestant drugs need to be taken under the guidance of a doctor, do not take blindly, so as not to damage the body and aggravate the condition.