Eating a little bit of food on the stomach bloating may be caused by chronic gastritis, gastrointestinal dysfunction, gastric ulcer and other pathological factors, but also may be caused by too small appetite. 1. Chronic gastritis: chronic gastritis refers to the chronic inflammatory lesions of the gastric mucosa, its typical symptoms manifested in the epigastric discomfort, fullness, etc., but also accompanied by lack of appetite, belching, acid reflux, diarrhea and other symptoms. 2. Gastrointestinal dysfunction: Gastrointestinal dysfunction caused by various factors may slow down the peristalsis of the intestines and stomach, thus leading to the accumulation of food in the gastrointestinal tract, which may cause abdominal bloating or abdominal discomfort and other symptoms. 3. Gastric ulcer: its main manifestation is epigastric pain, but some patients may also have epigastric bloating symptoms, usually after eating the symptoms will worsen. 4. Excessive appetite: If too much food is eaten at one time, the stomach does not have enough time to expel the food into the small intestine, resulting in the accumulation of too much food in the stomach, which may cause bloating. If the symptoms are not relieved after eliminating the problem of food intake, or if the symptoms persist for a long time and affect the quality of life, it is recommended to go to the hospital to improve the relevant examinations and identify the causes before carrying out symptomatic treatment. Pay attention to your dietary habits, control the amount of food you eat, and try to choose a light diet.