Stomach pain after eating too much is related to the patient’s past indigestion, weakness of the spleen and stomach, chronic gastritis and other diseases. Most people with indigestion will have insufficient secretion of digestive juices and poor gastric power, which will affect the digestion and emptying of food after eating. As a result of eating too much, food has been staying in the stomach for a long time, causing some irritation to the gastric mucosa, so it will cause stomach pain. Patients with weak spleen and stomach to the extent that the spleen cannot transport and transform, the stomach loses harmony and descends, and too much food eaten cannot be digested and absorbed in time causing stomach pain. Patients with chronic gastritis, because the gastric mucosa is damaged, when too much food is consumed, the secretion of gastric acid increases, the peristaltic function of the stomach slows down and cannot digest too much food, and the excessive gastric acid further stimulates the gastric mucosa, which causes spasm and contraction, thus inducing the symptoms of stomach pain.