After eating red dragon fruit urine turns red generally 1-3 days can return to normal, the specific time varies from person to person, can not be generalized. Red dragon fruit contains beet red pigment, which is not easily absorbed by the body and can be discharged from the urinary system and digestive system with feces or urine, resulting in light red urine, which is a normal physiological phenomenon. Usually only the color of urine changes, there will not be a series of uncomfortable symptoms such as urinary urgency, urinary frequency, urinary pain. Usually there is no bigger problem, it is recommended to drink more water and urinate regularly, and the symptoms of reddened urine will be relieved in about 1-3 days, without special treatment such as medication. However, if the patient’s red urine does not ease after 3-4 days, or if it is accompanied by other discomfort, he or she needs to go to the urology department of the hospital for routine urine or urological ultrasound examination in order to make a clear diagnosis and exclude the possibility of inflammatory infections and other diseases.