Stomach distension and vomiting can be caused by a variety of reasons, including disease factors, dietary factors, drug factors, etc. It is recommended to identify the causes, strengthen dietary regimen, and if suffering from diseases, active treatment is required. The details are as follows: 1. Disease factors: such as gastritis, reflux esophagitis, gastric ulcer, etc. Under normal circumstances, most of the gas in the abdominal cavity, after absorption by the blood vessels of the intestinal wall, is expelled from the body by breathing in the lungs. Certain gastrointestinal diseases, such as inflammation, ulcers, dysfunction, etc., can lead to disorders in the blood circulation of the intestinal wall, affecting the absorption of gas in the intestinal cavity, thus causing bloating and vomiting. If you have gastritis, gastric ulcer, you need to give the gastric mucosa protection drugs, such as aluminum thioglycollate, bismuth, and proton pump inhibitors omeprazole, lansoprazole, etc. If you have reflux esophagitis, you need to take acid suppressants to neutralize gastric acid, commonly used drugs such as aluminum hydroxide gel. In addition, acute cholecystitis, acute pancreatitis, early stages of acute appendicitis and diseases such as diabetic ketoacidosis and uremic syndrome can also cause gastrointestinal symptoms with gastric distention and vomiting. It is recommended to actively seek medical advice to clarify the cause and carry out reasonable treatment; 2. Mental factors: long-term anxiety or excessive mental stress may also lead to stomach distension and vomiting. Therefore, it is necessary to properly relieve stress and maintain a good mood; 3, dietary factors: eating foods that can easily cause flatulence, such as beans, bran, apples, peaches, onions, collard greens, cereals, groundnuts, potatoes and other foods, as well as dairy foods, can lead to bloating and vomiting. Such symptoms may also occur if lactose intolerant patients consume dairy products. Therefore, it is important to maintain good eating habits, chew slowly and eat too much food that can easily lead to flatulence at one time; 4, drug factors: taking antibiotics may disturb the balance of intestinal flora, and stomach bloating and vomiting may occur after eating. Patients should not abuse antibiotics and need to consult a professional doctor when taking them.