Always farting but not defecating may be due to physiological reasons, such as eating too little food as well as consuming food containing too much gas, or pathological reasons, such as constipation and other diseases. 1. Physiological reasons: if the patient has eaten less food in recent days, after digestion and absorption in the gastrointestinal tract, this situation will occur due to insufficient feces formation, while the exhaust function of the intestines is still normal. Secondly, if the patient eats a lot of food that produces too much gas, such as beans, cola or beer, etc., the gastrointestinal tract will produce a lot of gas, and the bowel will pass gas without defecation. 2. Pathological causes: If the patient suffers from constipation, the feces in the intestinal tract will be stagnant and fermented, which will produce a large amount of gas, resulting in the phenomenon of defecation but not bowel movement. Or gastrointestinal dysfunction will lead to indigestion, intestinal flora imbalance, rapid bacterial fermentation, so that food corruption accelerated, releasing a large number of odor gas. This can be manifested as always farting but no bowel movement. Always farting without defecation may also be caused by other reasons, it is recommended that patients go to the hospital as soon as possible to find out the cause of the disease for targeted treatment.