There are more types of nephritis in children, and the survival time of different types of nephritis is different, the vast majority of patients with nephritis can be completely cured, basically does not affect the life expectancy. The most common types of nephritis are acute glomerulonephritis and chronic glomerulonephritis with tiny lesions. Acute glomerulonephritis is a disease with self-limiting tendency, and most of the patients can be completely recovered to normal within 3 months after resting and symptomatic treatments, without any after-effects, and won’t be transformed into uremia; for tiny lesion type of nephropathy, most of the patients can be completely transformed to urinary protein after hormone therapy, and their renal function will remain stable for a long time. The hormone treatment can make most of the urinary protein completely turn negative and the renal function is maintained stable for a long time. Only when creatinine has been elevated at the onset of the disease, the kidneys have been atrophied, or the pathological result of renal biopsy is diffuse glomerulosclerosis, the time for progression to UTI is relatively short, but even if the progression to UTI, the life expectancy through dialysis is more than 20 years.