Whether renal failure can be cured is related to the type of renal failure, acute renal failure is possible to be cured, chronic renal failure is generally not completely cured. Acute renal failure refers to a series of clinical syndromes caused by rapid decline of renal function in a short period of time due to various etiological factors. After active treatment of the primary disease (such as restoring renal perfusion, relieving urinary tract obstruction, and treating renal diseases), renal function can gradually be restored to normal; however, if the treatment is untimely, the disease may turn chronic or even die. Chronic renal failure refers to the end result of the continuous progression of various chronic kidney diseases, with renal function decline, metabolite retention, and imbalance of the body’s internal environment as the main clinical manifestations. Due to the gradual and irreversible impairment of renal function, it is usually incurable. However, it is still necessary to actively control the primary disease (primary/secondary glomerular disease, tubular disease, etc.) and delay renal damage. When renal failure occurs, one should go to the hospital in time to identify the cause of the disease and standardize the treatment under the doctor’s guidance, so as to avoid delaying the condition.