Transient hematuria can be caused by allergies to pollen, chemicals, or drugs. Transient hematuria can occur after strenuous exercise, or even hematuria of the naked eye. Viral infections (e.g., colds) can also occur occasionally, and are usually of no significance. Only multiple examinations for true hematuria should be taken seriously, should be further examination. So, what are the items of transient hematuria? The following is an introduction to the examination of transient hematuria: 1, ask the medical history ① urine color, such as red should be further understanding of whether to eat red urine caused by medicines or food, whether women’s menstrual period to exclude pseudo hematuria; ② hematuria appeared in the urinary course of the section, whether the entire hematuria, whether the blood clots; ③ accompanied by systemic or urinary symptoms; ④ there is no recent trauma to the lower back and abdomen, and urological tract instrumentation History of examination; ⑤ whether there is a history of hypertension and nephritis in the past; ⑥ whether there is a history of deafness and nephritis in the family. The following three types of hematuria can be distinguished by the urine three-cup test. (1) Primary hematuria hematuria is only seen at the beginning of urination, and the lesion is mostly in the urethra. (2) Terminal hematuria occurs when urination is about to end, and most of the lesions are in the bladder triangle, bladder neck or posterior urethra. (3) Hematuria occurs during the whole process of urination, and the bleeding site is usually in the bladder, ureter or kidney. (1) Tubular pattern in the urine sediment, especially the erythrocyte tubular pattern, indicates that the bleeding comes from the renal parenchyma, which is mainly seen in glomerulonephritis. (2) Urine protein measurement hematuria with more severe proteinuria is almost always a sign of glomerulonephritis. (3) Urine granulomatous tubular pattern with immunoglobulins (IGM). (4) Urinary erythrocyte morphology Examination of the urinary sediment by phase microscopy is currently the most commonly used method to identify glomerular or non-glomerular hematuria. When the number of urinary erythrocytes is >8×106/L, of which >30% are heterogeneous erythrocytes (ring-shaped, target-shaped, budding cells, etc.), it should be regarded as glomerulonephritic hematuria. Urinary protein quantification >500 mg/24 hours is often suggestive of glomerular hematuria. If the renal pelvis, ureter, bladder or urethra bleeding (i.e., non-glomerular hemorrhage), the formation of red blood cells, the size of the majority of the normal, only a small portion of the aberrant red blood cells. If the hematuria is caused by glomerular disease, the majority of the red blood cells are malformed, accounting for more than 75% of the cases, and their morphology is different, and their sizes are obviously different.