Characteristics of blood in urine vary according to the presence of hematuria in the naked eye and microscopic hematuria. Naked eye hematuria can present urine wash color or blood color, and microscopic hematuria urine microscopy presents the characteristics of more than 3 red blood cells per high magnification field of view. Naked eye hematuria, is the naked eye can be observed that the patient’s urine appears color change, presenting the color of flesh wash or blood. Microscopic hematuria, an abnormal condition that is difficult for patients to detect, is often detected through routine urinalysis. There are two types of causes of hematuria, which are categorized as non-disease and disease-related hematuria, with disease-related causes being the most common. Common disease causes include a range of urologic disorders. Such as all types of glomerulonephritis, interstitial nephritis, urinary tract infections, stones, tuberculosis, tumors and so on. The appearance of blood in the urine symptoms, should promptly seek medical attention, under the guidance of the doctor to improve the relevant examination to clarify the cause of the disease, and active treatment.