Possible causes of gas and bloating include eating more gas-producing foods, insufficient gastrointestinal motility, Helicobacter pylori infection, etc. It needs to be treated according to the cause of the disease, such as using medications such as domperidone and metronidazole. 1. Eating more gas-producing foods: Eating more gas-producing foods such as soybeans and sweet potatoes at one time may cause an increase in the amount of gas produced in the gastrointestinal tract, resulting in a feeling of bloating. This is generally self-limiting and will improve after stopping eating the food in question and passing gas. 2. Insufficient gastrointestinal motility: Due to the decrease of gastrointestinal peristalsis, the food in the gastrointestinal tract stagnates and ferments, resulting in gastric distension. It can be treated with gastrointestinal stimulating drugs such as domperidone, mosapride and trimethoprim. Side effects such as dry mouth, dizziness and headache may occur with gastrointestinal power drugs. 3. Helicobacter pylori infection: long-term inflammation of the gastric mucosa may lead to symptoms of gastric flatulence. Generally, you can use omeprazole, metronidazole, amoxicillin, colloidal bismuth pectin four kinds of drugs combined treatment, eradication of Helicobacter pylori. Omeprazole, metronidazole, and amoxicillin may all cause gastrointestinal discomfort such as bloating; colloidal bismuth pectin may have constipating side effects. When stomach bloating occurs, it is recommended to go to a regular hospital to identify the cause and actively treat it.