Tummy pain after walking after meals may be caused by food irritation, decreased gastrointestinal blood, or pathologic factors such as gastritis. 1. Food stimulation: Dietary intake of spicy stimulation, cold and cold food or too much food in the stomach, walking after meals when the food will cause stimulation of the gastrointestinal tract, resulting in gastrointestinal spasms, causing stomach pain. 2. Reduced blood in the stomach and intestines: After meals, a large amount of blood in the human body is concentrated in the stomach, which helps the stomach to digest and absorb food. And the blood will be redistributed when the human body moves, resulting in a relative decrease in gastrointestinal blood flow, which can cause stomach pain. 3. Pathological factors: gastrointestinal diseases, such as gastritis, gastric ulcer, enteritis, biliary colic, irritable bowel syndrome, gastroptosis, etc., the patient may experience symptoms of indigestion, and may also lead to gastrointestinal spasms, causing abdominal pain. It is recommended not to exercise immediately after meals, especially not to do strenuous exercise, to avoid causing abdominal pain. You can rest properly after meals, and then exercise after the food is gradually digested. When the symptoms of stomach pain after walking after meals occur frequently, it is recommended that patients seek timely medical treatment and choose the appropriate treatment and medication under the guidance of the doctor.