The red color of urine is recommended to go to the hospital for examination to clarify the specific cause. Possible causes: a. Due to medication or food staining. When using food and fruits that contain more red pigment, or taking special medications orally, such as rifampin capsules, red staining of urine can occur, similar to hematuria. At this time, the urine is retained for laboratory examination, and no red blood cells are seen in it, so it is sufficient to stop the intake of the relevant medication food or fruit. Second, if the urine routine examination, found more red cells, suggesting hematuria caused by bleeding, you need to perform ultrasound and CT and other examinations to clarify the cause of bleeding. If you have kidney stones, bladder stones, ureteral stones, etc., it can lead to local mucosal bleeding and red urine color. When there is an acute infection of the urinary system, there can be mucosal congestion and edema, and the bleeding is mixed in the urine to show as red urine. When there is a bladder tumor, the tumor destroys the mucosa of the urinary tract and causes bleeding, which can also manifest as red urine.