Many people eat red red dragon fruit, the color of the stool will also appear to change, such as eating dragon fruit in the morning, the afternoon stool is likely to be excreted in a timely manner, to the next day and then have a stool, there may be a kind of like dragon fruit color of the stool, after the water soaked, basically the color of the rosy red or purplish red. But if the stool in the intestinal tract to accumulate for a long time, water absorption is more, see the appearance of the stool, there may be blackened a situation. But after soaking in water for a long time, there may still be red water-like things oozing out, this is still mostly because of eating red dragon fruit. But in order to be vigilant, if there was originally a patient with digestive tract diseases, especially with peptic ulcer. Stool color black, even when there is a bloody smell, it should be recommended to go to the hospital in time to check the stool routine. Do fecal occult blood, if the fecal occult blood is positive, or directly found to have red blood cells, may not simply eat dragon fruit caused by the black stool, there is gastrointestinal bleeding caused by the black stool. Therefore, it is important to observe the stool, including not only the color and character, but also the taste, should be closely observed. Simply solve the stool with the same color as the dragon fruit stool is not a big problem, if it is black or soy sauce color and have a bloody taste, we should be vigilant.