Normal bowel movement but farting for a long time may be caused by eating too fast, often eat sweet potatoes, pastries and other foods resulting in the production of more gas; it may also be caused by an imbalance of intestinal flora, taking drugs such as acarbose. 1. Physiological factors: eating too fast, part of the gas into the body, will also often fart, but normal bowel movements. Often eat sweet potatoes, soybeans and other easy to produce gas food, in the intestinal tract to produce gas will often fart. If you often eat sweets such as pastries, which are not easy to be digested and absorbed, you will also produce gas in your body and fart frequently. 2. Intestinal flora disorders: Imbalance of intestinal flora leads to the growth of harmful bacteria and gastrointestinal disorders. After eating, food produces gas under the fermentation of intestinal bacteria, resulting in frequent farting, but normal bowel movements. 3. medicinal factors: if you often take drugs such as acarbose, inhibit the absorption of carbohydrates in the gastrointestinal tract. The unabsorbed carbohydrates produce gas under bacterial fermentation, resulting in bloating and farting, but normal bowel movements, which is a side effect of the drug and nothing to worry about. If you exclude eating habits and other physiological reasons, farting may be caused by other diseases, and you should consult a doctor in time to find out the cause and treat it in time.