Occult glomerulonephritis without any signs and symptoms of kidney disease, but only incidentally found during physical examination abnormal urine test is called “asymptomatic hematuria” and/or “proteinuria”, called “occult glomerulonephritis This is called “occult glomerulonephritis”. Occult glomerulonephritis is the most common type of primary glomerulonephritis, usually without symptoms such as edema and hypertension, and without impairment of kidney function. The prognosis of the disease is not as good as previously thought, some patients due to the absence of specific clinical symptoms, long-term neglect of treatment, and finally will develop renal impairment and uremia: 1, persistent mild or moderate proteinuria, urine protein, 24h urine protein quantification of less than 1g, urine sediment may have granular tubular type, and may have a small number of red blood cells <5/HP>. Pathological changes are mostly mild thylakoid hyperplasia or focal thylakoid hyperplasia. 2. Continuous or intermittent hematuria is predominant, and urine red blood cells are predominantly aberrant on phase contrast microscopy. Often under the influence of fever, pharyngitis, overexertion, cold, drug damage and other triggers, there is – passing carnality for IgA nephropathy or thylakoid hyperplastic nephritis. 3, persistent proteinuria and hematuria, and sometimes edema, increased blood pressure, etc., but when the trigger has passed, it can return to the original insidious state. These patients have a poor prognosis and are prone to slow progression to renal failure. The pathological changes are more commonly seen in IgA nephropathy or thylakoid proliferative nephritis, membranoproliferative, membranous nephritis and focal sclerosing nephritis.