An upset stomach that always wants to eat may be related to pregnancy, chronic gastritis and duodenal ulcer. 1. Pregnancy: Especially in the late stage of pregnancy, because the size of the fetus in the uterus gradually increases, it will press on the gastrointestinal tract which is in the same abdominal cavity as the uterus, which can lead to stomach discomfort. But because pregnant women need to provide nutrition for the fetus in the abdomen, energy consumption is relatively large, so always want to eat. 2. Chronic gastritis: patients with chronic gastritis may have digestive tract dysfunction, when the digestive function is hyperactivity, patients can be manifested as always want to eat; and because of the existence of gastric mucosa inflammatory reaction, under the action of inflammatory factors, there will be gastric discomfort. 3. duodenal ulcer: duodenal ulcer patients often have excessive secretion of gastric acid, which will stimulate the stomach to produce burning pain. But also because duodenal ulcer has fasting pain, eating to relieve the characteristics, so the patient in order to relieve the pain will always want to eat. If the above situations need to consult a doctor in time, under the guidance of professional doctors to clarify the cause of the disease, to develop individualized diagnosis and treatment plan.