Discharge of urine is red, it is recommended to go to the hospital for further examination to clarify the specific causes, possible causes: 1, the use of special red pigmented food or the use of special medications, there may be a red stained urine, such as rifampicin capsules, and some patients consume dragon fruits after the phenomenon of red urination. At this time to check the urine routine, no red blood cells, only need to stop the relevant drugs and food intake can be. 2, the presence of urinary system tumors, such as the elderly patients appear painless hematuria, it is recommended to perform ultrasound to rule out the presence of urinary system tumors, such as bladder tumors, kidney tumors and so on. These tumors have no specific symptoms in the early stage, only manifested as blood in urine, the volume of respiration gradually increase, can produce pressure symptoms and pain.3, with urinary stones can also be bleeding during urination, because the stones lead to the peripheral mucous membrane damage and blood seepage. At this time can show reddish urine color, need to ultrasound to be excluded.4, the occurrence of urinary tract infection, can also appear blood in the urine. Infection occurs when the urinary epithelium is congested, edema, accompanied by small bleeding and mixed in the urine, can be manifested as hematuria. At this time, it is necessary to carry out routine urine tests and culture tests to confirm the diagnosis.