High red blood cells in nephritis indicate the presence of hematuria. In this case, further tests should be done, such as the test of urine erythrocyte morphology, which can determine whether the hematuria is of nephrogenic or non-nephrogenic origin. If the hematuria is of nephritic origin, the abnormal red blood cells are mostly greater than 80%, which is hematuria caused by nephritis itself. This situation only needs symptomatic treatment, such as the use of hematuria an capsule to cool the blood to stop bleeding. If the heterogeneous red blood cells are less than 50%, presenting homogeneous situation, considered to be non-glomerular origin of hematuria. This situation is seen in pyelonephritis, cystitis, stones, tumors or hematological diseases caused by hematuria, this situation should be further imaging and laboratory testing to determine the cause of hematuria for further treatment.