Burning sensation in the abdomen while sleeping is mostly seen in indigestion, gastroesophageal reflux, gastric ulcer and so on. 1. Indigestion: It may be due to poor dietary habits, such as eating too much indigestible food, and slow peristalsis of the gastrointestinal tract at night when you sleep, which causes indigestion, leading to excessive secretion of gastric acid, which causes heartburn sensation. 2. Gastroesophageal reflux: when sleeping at night, due to the influence of the body position, resulting in gastric acid reflux, causing irritation to the esophagus and gastric mucosa, thus causing burning sensation in the abdomen. 3. Gastric ulcer: due to the existence of serious damage to the patient’s gastric mucosa, the ulcer itself will lead to a burning sensation in the stomach, and the symptoms are more obvious at night, which may be affected by diet. Try to avoid eating before going to bed, usually eat a light diet easy to digest, if there is a stomach disease timely cooperation with the doctor treatment.