Whether eating watermelon hurts the stomach is related to the temperature of the watermelon, the amount of food, freshness, physical condition and so on, and it can not be clearly stated that eating watermelon will hurt the stomach or not. 1. Temperature: If you eat cold watermelon, it may stimulate the gastrointestinal tract to accelerate peristalsis, or cause smooth muscle spasm of the gastric mucosa, diarrhea, abdominal pain and so on. Eat room temperature watermelon on the stomach irritation is small, generally not obvious discomfort symptoms. 2. The amount of food: watermelon contains a lot of sugar substances, eat too fast, or eat too much watermelon at once, increase the burden on the stomach, may appear vomiting. Eating the right amount of watermelon slowly in small bites can replenish water and promote metabolism, and generally will not cause damage to the stomach. 3. Freshness: If the watermelon is left overnight, it may be spoiled, and it is easy to cause gastroenteritis after eating, nausea, diarrhea and other discomforts, and eating a moderate amount of fresh watermelon will not hurt the stomach. 4. Physical condition; irritable bowel syndrome and other people, gastrointestinal function is poor, eating watermelon may stimulate the gastrointestinal tract diarrhea. People with better gastrointestinal function will not hurt their stomach if they eat watermelon. Usually eat less cold watermelon, avoid eating too much at once, eat more fresh watermelon. If eating watermelon discomfort symptoms should be timely consultation, under the guidance of the doctor for reasonable treatment.