Butt cool farting may be physiological factors or abdominal cold caused, may also be lumbar disc herniation, lower extremity arteriosclerosis combined with intestinal flora dysbiosis, gastrointestinal dysfunction and other disease factors. 1. Physiological factors: less exercise caused by slow blood flow in the buttocks or buttocks warming improper people can appear buttocks cool, if at the same time eating too much gas-producing foods, such as beans, sweet potatoes, etc. can lead to buttocks cool fart more cases. 2. Abdominal cold: if you do not pay attention to keep the abdomen warm, resulting in abdominal cold, abdominal cold can affect the gastrointestinal peristalsis, and the buttocks are next to the waist may also appear to keep warm, resulting in cool buttocks farting more. 2. Disease factors: lumbar intervertebral disc herniation can compress local blood vessels or lower extremity arteriosclerosis leading to poor blood circulation in the buttocks caused by the waist and buttocks, lower extremities become cold, if accompanied by intestinal dysbiosis leading to the normal balance of intestinal flora is disrupted, the increase in the number of gas-producing bacteria, or at the same time accompanied by gastrointestinal dysfunction, which will ultimately lead to the cool buttocks farting more. It is recommended to go to the hospital after eliminating physiological factors in the case of cold buttocks and farting.