The causes of stomach pain from hunger in the middle of the night are as follows: 1. duodenal ulcer: duodenal ulcer often has the characteristics of hunger pain, pain at night, and relief after eating or taking acidulants. 2. long time without food: some people do not eat at night for a long time, the vagus nerve is excited, there is too much stomach acid in the stomach, no food is given in time to neutralize, stomach acid stimulates the gastric mucosa, and causes spasmodic pain in the smooth muscle of the stomach, most have chronic Most of them have the basis of chronic gastric mucosal damage. The diet should be light, warm, soft and easy to digest, avoid the intake of spicy and stimulating food, avoid overeating, and avoid the stimulation of strong tea, coffee and alcohol. We should eat less and more meals, develop good eating and resting habits, avoid staying up late, and should exercise properly to enhance physical fitness and promote recovery.