The reason for farting a lot but not smelly, generally consider that there may be food factors, bad habits, indigestion and intestinal flora disorders and so on. 1. Food factors: for example, eating gas-producing food, onions, potatoes and sweet potatoes, etc., will easily cause intestinal gas production, causing farting phenomenon, usually not odor. 2. Bad habits: for example, eating too fast or talking while eating will cause a lot of air to be swallowed into the abdomen, causing the gastrointestinal tract to gather more gas, resulting in farting, which is usually not smelly. 3. Indigestion: once the gastrointestinal secretion of digestive enzymes and gastric acid is reduced, it will cause a decline in digestive function, resulting in food in the gastrointestinal not being fully fermented, resulting in farting, sometimes smelly, but also not smelly. 4. Intestinal flora disorders: once the intestinal beneficial bacteria increase and harmful flora decrease, it will cause intestinal gas accumulation, resulting in increased farting, which may not be too smelly. It is recommended that the patient first exclude dietary factors or bad habits factors, if there is still no improvement, it is recommended to consult the gastroenterology department in a timely manner, improve the colonoscopy and other related examinations, to rule out the existence of other organic diseases, to clarify the cause of the disease, to treat the cause, and to use medication under the guidance of the doctor, to avoid delaying the condition.