If you consume too many cherries at one time, the color of your stool will turn dark, but a small amount will not turn dark. Cherry is a fruit with high nutritional value, which can help digestion, anti-inflammation and sterilization, and is loved by many people. Cherries contain a lot of red pigment, the color of the stool will be dark red after eating, if you eat a large amount, the iron in cherries and digestive juices oxidation reaction, with fecal discharge, the stool will appear black. When black stool appears, you cannot just think that it is due to food, but you must go to the hospital for a systematic examination to find out if there is any occurrence of gastrointestinal bleeding. The common predisposing diseases are esophagogastric-fundic varices, peptic ulcers, gastrointestinal tumors, erosive ulcers, etc. After the cause is clearly identified, comprehensive treatment such as hemostasis, inhibition of gastric acid secretion and protection of gastric mucosa should be given under the guidance of doctors to avoid delaying the condition.