After eating dragon fruit stools are red with excessive intake, indigestion, intestinal inflammation, dragon fruit itself contains a large amount of natural red pigment, this natural substance is not absorbed by the body, so in a large number of intake, food residues will be affected by the presence of too much natural red pigment, and in the formation of fecal discharge color will also appear red performance. When the body has indigestion, the nutrient absorption of food will be affected, after eating dragon fruit nutrients are not completely digested and absorbed, so the possibility of red color of stool will increase. A part of the intestinal system will exist in inflammation, and dragon fruit itself is a cold, after eating will cause stimulation of the intestinal wall, when the intestinal peristalsis hyperactive, dragon fruit will even be untouched discharge, then there will be red stool color.