There are many reasons why urine appears reddish, including food, drugs, urinary system diseases, etc. can cause red urine. 1. Food: certain foods, such as dragon fruit, etc., a large number of consumption may appear to cause the urine reddish color, this does not require special treatment, the body metabolism can be restored after the symptoms. 2. Drugs: some drugs can cause the urine red, such as rifampicin and other drugs, can lead to red urine after consumption, after stopping the use of the drug can generally be restored on their own. 3. caused by urinary tract diseases: including urinary tract inflammation, stones, tumors, injuries, etc., may appear inside the urine contains too many red blood cells. There are many other reasons for red urine, such as thrombocytopenic purpura, hemophilia, diabetic nephropathy or uterine, vaginal or rectal tumors invading the urinary tract, etc., you should go to the urology department of the hospital in time for examination and treatment.