The causes of daily afternoon stomach pain are as follows: 1, chronic gastric disease: gastroscopy to understand the presence of chronic gastritis, gastric ulcer, duodenal ulcer, gastric and esophageal diverticulitis, and gastric cancer and other diseases. 2, poor diet: the pain may be caused by eating cold, greasy, spicy and other irritating foods at noon. 3, gastrointestinal neurosis: stomach pain caused by some psychological factors. In daily life, we should eat more warm, soft, light and easily digestible food, avoid raw, cold, hard, and spicy, greasy and other stimulating foods, eat less and more meals, avoid overeating, avoid strong tea, coffee, alcohol and other undesirable stimuli, and exercise appropriately to enhance physical fitness and promote physical recovery.