Loud farting may be caused by improper diet, intestinal infections and indigestion. 1. Improper diet: Eating too fast, overeating, talking during meals, eating too much dairy products rich in lactic acid bacteria, or eating too much sweet potatoes, potatoes and other foods can cause the intestines to produce too much gas, which can cause loud farting. 2. Intestinal infection: when the intestinal tract is infected by bacteria, viruses and other pathogens and gastroenteritis occurs, the imbalance of intestinal flora can lead to more gas-producing bacteria and increased exhaust, which can result in loud farts. 3. Indigestion: mainly due to irregular diet, overeating and other factors that lead to a large amount of food in the stomach can not be discharged in a timely manner, the fermentation of gas can cause farting sound loud, often accompanied by nausea, vomiting and other symptoms. You should pay attention to a healthy diet and seek medical advice if you have any discomfort, and treat the symptoms under the guidance of a specialist.