Farting as soon as you get cold may be caused by physiological or pathological reasons, such as gastrointestinal dysfunction, indigestion and so on. 1. physiological reasons: such as physiological reflexes, a cold, skin surface temperature nerves feel the coolness will cause nerve reflexes, stimulate intestinal peristalsis, promote farting. 2. Pathologic causes: (1) gastrointestinal dysfunction: gastrointestinal peristalsis is irregular, may accelerate, and gastrointestinal sensitivity, easy to provoke, a cold will stimulate gastrointestinal peristalsis active and fart. (2) Indigestion: Once exposed to cold, the patient’s immunity drops and the gastrointestinal function is affected, which prevents him from digesting the food thoroughly. These foods ferment and produce gas in the intestinal tract, resulting in farting when you get cold. Farting when cold alone does not have an etiological point of view and cannot be accurately determined, but needs to be combined with the characteristics of the medical history and other test results to make an accurate judgment, it is recommended to clarify the cause of the disease under the guidance of a doctor.