Eating and vomiting are related to pregnancy, chronic gastritis, reflux esophagitis, pancreatitis and other factors. First of all, women will have hormone secretion disorder in early pregnancy, so it will affect the function of the digestive system, and many women will have nausea and vomiting. Secondly, the gastric function of patients with chronic gastritis will be affected, the food in the stomach can not be emptied in time, when eating not only will appear early full, some people will also appear vomiting. Then, in patients with reflux esophagitis, food can cause irritation to the mucous membrane of the esophagus during meals, resulting in spasm of the smooth muscle of the esophageal area, thus causing vomiting. Finally pancreatitis is mainly caused by factors such as overeating, excessive alcohol consumption and large intake of fatty foods. The digestion of food in patients during an acute pancreatitis attack will be affected, so vomiting will occur. Some people vomit at meals is caused by eating irritating food, which causes irritation to the gastric mucosa and leads to spasm of the stomach wall.