The prognosis for acute glomerulonephritis is generally good, with the majority of patients experiencing diuresis, decompensation, and hypotension within 1-4 weeks, followed by improvement in urinalysis and normalization of serum C3 within 4-8 weeks. In some cases, however, recovery is delayed, and a small amount of microscopic hematuria and microscopic urine protein can take six months to a year to disappear, and some patients even develop chronic renal failure and uremia. 38%-60% of Baldwin’s cases were followed up for 2-19 years, and the results were unresolved. The following table lists the criteria for determining the return of normal follow-up indicators, if any of the indicators are abnormal or the kidney lesion has not recovered, it is judged as not healed. Chronic renal failure is defined as a disease of more than 1 year’s duration with persistent abnormal renal function.