Dragon fruit eaten urine may turn red, if there is no other discomfort symptoms, is a normal phenomenon. But if accompanied by other symptoms, may be due to disease factors. Red dragon fruit has a large number of plant pigments, not easy to be degraded and absorbed by the human body, with urine and feces, and thus excreted. Part of the population can be excreted with the urine, the urine color is red. However, if the reddish color of urine, but also urinary pain, urinary urgency, lower abdominal pain and other symptoms, need to consider is due to disease factors, may be cystitis, kidney stones, prostatitis and so on. Therefore, if the patient after eating dragon fruit appeared urine color red, should be taken seriously, need to go to the hospital, to find out the cause of the disease.