The most common causes of exhaust gas are dietary factors, indigestion, chronic enteritis, etc. It is necessary to take general treatment and medication to alleviate the problem, and the commonly used medications are mosapride, norfloxacin, and praziquantel. 1. Dietary factors: generally caused by eating too much gas-producing foods, such as potatoes, onions, sweet potatoes, etc., reduce the intake of such foods, the exhaust symptoms will gradually ease. 2. Indigestion: It is mostly seen in functional indigestion, such as overeating will lead to food can not be fully digested, stay in the intestinal tract for too long, produce more gas caused. We should adjust the diet, eat less and more frequent meals, and take appropriate drugs to promote digestion, such as mosapride, domperidone, gastrointestinal tablets and so on. 3. Chronic enteritis: generally caused by multiple factors such as infection, environment, etc. It is mostly seen in bacterial infection, and antibiotic drugs such as norfloxacin and levofloxacin can be taken as prescribed by the doctor. In case of parasitic infection, praziquantel can be taken. The above drugs should be used under the guidance of a medical professional. Constant flatulence may also be related to intestinal flora imbalance, irritable bowel syndrome, etc. If the above symptoms occur, you should consult a doctor in time to find out the cause and then carry out targeted treatment.