The fistula of proximal convoluted tubule which causes the persistent leakage of the glomerular filtrate and brings about renal subcapsular effusion is very seldom seen. There has been no similar report about it. Up to now, there has been no definite diagnosis and treatment for this disease. We made the advantage of the great absorption power of the greater omentum blood vessels networks to make internal drainage. In this way, the glomerular filtrate was reabsorbed and thus the disease was cured.