After eating red dragon fruit, urination can be red urine, because red dragon fruit is rich in red and purple pigment, when eating red dragon fruit after digestion, absorption, pigment will also enter the body with nutrients, in the body through circulation metabolism, and finally excreted by the kidneys, with urine out of the body, urine contains red and purple pigment and make the urine red. Although the color of the urine has changed, but there will not be frequent, urgent, painful urination and other uncomfortable symptoms, if to the hospital to check the urinary routine, urinary system color ultrasound examination, there are no positive results, so this is a normal physiological metabolic phenomenon, do not panic.