The diagnosis of lga nephropathy is mainly through clinical manifestations and related examinations. This disease is a kind of chronic glomerulonephritis, mainly manifested as edema, hematuria, proteinuria, hypertension, and also accompanied by varying degrees of renal function damage, often with prodromal infection symptoms, after a few days, gross hematuria occurs, and most patients have foam in their urine, mainly due to proteinuria,? It is necessary to go to a specialized hospital for relevant examinations to make a clear diagnosis. Generally, routine urine tests, quantitative urine protein tests, routine blood tests, renal function tests and gene tests are required. The diagnosis can be confirmed through renal tissue biopsy. Most of these diseases show a chronic progression process and need long-term drug treatment. Most of them have a good prognosis.