1, observe urine cola color, wash meat water color, mostly from the kidney parenchyma; bright red, with blood clots, mostly from the lower urethra; dripping blood after urination, mostly from the urethra. 2, check the urine routine, preferably the first urine in the morning. 3, such as urine routine urine occult blood positive, not sure it is hematuria, need to centrifuge urine sediment manual microscopy, red blood cells more than 3 / high magnification field. 4, 1 urine test is abnormal, need to be retested, more than 3 times has significance. 5.If hematuria is confirmed, find the cause of hematuria. 6.Clinical symptoms initially determine whether the hematuria originates from the glomerulus. 7.Urine red blood cell morphology helps to determine glomerular hematuria and non-glomerular hematuria, and glomerular hematuria with severe deformation of red blood cells over 30%. 8, hematuria with proteinuria and red blood cell tubular pattern, mostly from the kidney, can check the early kidney damage indicators, renal function. 9, urinary calcium creatinine ratio, to see if there is hypercalciuria. 10.Urological ultrasound to check for stones, tumors and malformations. 11.Check the left renal vein ultrasound for the presence of Nutcracker syndrome in long and lean body type. 12.Check retrograde cystography if necessary. 13, routine blood tests, coagulation function tests to understand the presence of hematologic disorders. 14.If glomerular hematuria is considered, ASO, C3, blood IgA, autoantibody test and hepatitis B pathogenetic test should be checked to further find the cause. 15.If proteinuria is present, urine protein quantification and renal function should be checked to understand the degree of renal damage. 16.Regardless of whether there is a family history, parents should perform routine urine examination to help determine whether there is hereditary nephritis.