Stomach pain, nausea and vomiting after eating are related to chronic gastritis, indigestion, food poisoning, cholecystitis and pancreatitis. Once there is chronic inflammation on the gastric mucosa, there will be pain when the gastric mucosa comes in contact with the food, especially when the ingested food is too coarse, and nausea and vomiting will also occur. Some people will have indigestion, after a large amount of food intake, due to insufficient secretion of digestive juices can not digest and empty the food as soon as possible, resulting in the retention of food in the stomach, causing irritation to the stomach wall, stomach pain, nausea, vomiting. Some foods can be toxic, such as sprouted potatoes, after eating such food toxic substances will cause stimulation of the digestive system, resulting in stomach pain, nausea and vomiting after meals, which need to be dealt with in a timely manner to avoid health effects. Some people’s post-meal stomach pain and nausea are caused after a large intake of fatty foods and are related to gallbladder and pancreatitis diseases. Bile and pancreatic juice can assist in the digestion of fatty foods. A large intake of fatty foods can lead to a high secretion of bile and pancreatic juice, which can induce inflammation once the bile and pancreatic juice is not discharged properly, thus causing stomach pain, nausea and vomiting.