The most common clinical manifestation of IgA nephropathy is blood in the urine, which is analyzed below. IgA nephropathy is a type of glomerulonephritis, the pathogenesis of which is the inflammation caused by IgA as the main immune complex, which is deposited in the thylakoid region of the kidney. The treatment of IgA nephropathy is mainly to give hormone and immunosuppression and treatment, some of the treatment effect is good, the condition can be controlled or even cured, some of the condition is not treated well, it can develop into renal failure.