Torasemide is a high-efficiency loop diuretic belonging to pyridine amide urea. It is mainly used in the treatment of congestive heart failure, hypertension and other diseases in cardiovascular department. Clinically, torasemide has a wide range of indications, rapid, powerful and lasting diuretic effect and low incidence of adverse reactions. It is a highly effective diuretic commonly used in clinic. It can inhibit the reabsorption of sodium and chlorine, and has diuretic and natriuretic effects.