If you eat a white heart of dragon fruit, generally will not appear urine red urine, if you eat red heart of dragon fruit may appear urine red urine. Dragon fruit contains anthocyanins, after eating may lead to urine into urine red phenomenon, after a period of time the color of urine can return to normal, if long time urine is urine red, it should pay attention to is the urinary system diseases and other lesions caused by the phenomenon, if every other day after the urine red to normal color, then exclude this phenomenon. If you eat dragon fruit after a long period of red urine to be considered due to urinary system diseases, such as urinary system tumors, urinary system stones and other lesions, so we should further through the abdominal CT, MRI and other tests for further diagnosis, it is recommended to consult a doctor in a timely manner.