Stomach bloating after meals may be caused by physiological reasons such as overeating, or it may be caused by pathological factors such as chronic gastritis and peptic ulcer. 1. Physiological factors: such as overeating, eating cold, greasy, spicy and stimulating foods, such as spicy hot pot, deep-fried skewers, marinated meat, alcohol, coffee, ice cream, etc., which stimulate the gastrointestinal mucosa and aggravate the burden on the digestive tract, resulting in gastric distension, stomach pain, nausea, vomiting and other symptoms. 2. Pathologic factors: (1) chronic gastritis: inflammatory changes in the gastric mucosa caused by long-term chronic stimulation of bacteria, viruses, fungi, parasites, etc., pathological changes such as congestion and edema, which can be manifested as postprandial epigastric fullness, early satiety, nausea, stomach pain and other symptoms. (2) peptic ulcer: mental psychology, environment, immunity, bacterial infection and other factors can cause ulcerative defects in the gastric and duodenal mucosa, causing acid reflux, heartburn, nausea, stomach pain, stomach bloating and other symptoms. Stomach bloating after meals may also be caused by pyloric tumors and other diseases, it is recommended to consult a doctor in time to clarify the diagnosis, under the guidance of the doctor for targeted treatment.