Red blood cells in urine routine suggest stones, urinary tract inflammation, tumorigenic lesions, etc. Generally, urine is free of red blood cells or has only a few red blood cells. If the urine is mixed with red blood cells, which can only be found under the microscope, it is called microscopic hematuria, and if the urine has a slightly red appearance and shows a meat-wash-like red color, it is called carnal hematuria. The condition of hematuria is mostly suggestive of urinary system pathology, such as urinary stone irritation, urinary inflammation or infection, and if there are neoplastic or tumorigenic lesions, the appearance of hematuria is also seen. In addition, if the recent exercise is relatively heavy, some hemolytic conditions may occur, which may also lead to the appearance of hematuria. However, it is possible that the red blood cell test of urine routine may have abnormal results, for example, women’s menstrual period, which may easily lead to the mixing of blood in the urine, resulting in abnormal results, so it is recommended that the hematuria situation found be rechecked several times to clarify the final situation. During the examination, in addition to checking the urine routine, it is also necessary to hold urine for urinary ultrasound examination, CT examination and, if necessary, urographic examination may be required so as to analyze the patient’s condition comprehensively. In short, it is recommended to check several times to clarify that it is hematuria, and then strive to find the cause and comprehensive analysis and treatment.