Gastric distension and dizziness may be caused by overeating, acute gastroenteritis and intracranial hypertension. 1. Overeating: when patients eat and drink too much, the stomach will dilate, resulting in reduced peristalsis, and when the stomach content exceeds the stomach’s digestive and absorptive capacity, it can lead to the retention of food in the stomach, causing gastric distension, and at the same time, digesting food will cause relative ischemia and hypoxia of the brain, which can lead to dizziness and other symptoms. 2. Acute gastroenteritis: when patients with acute gastroenteritis, it can lead to gastrointestinal tract dysfunction, reduce digestive function, abdominal pain, bloating, nausea, diarrhea and other symptoms. Dehydration can occur when diarrhea occurs, leading to a decrease in peripheral circulating blood volume and insufficient cerebral blood supply, resulting in dizziness. 3. Intracranial hypertension: there are many nerve tissues in the brain, if there is intracranial hypertension, it will affect the brain tissues, and symptoms such as dizziness will occur. When the vagus nerve is stimulated, symptoms of gastric distension will occur. There may be other reasons for stomach bloating and dizziness, so it is recommended to go to the hospital in time, clarify the cause under the guidance of professional physicians, and give targeted treatment or therapy.