Flatulence does not usually cause weight gain. There is no direct relationship between intestinal flatulence and obesity. Intestinal flatulence is generally due to intestinal dysfunction, intestinal flora imbalance, etc. leading to excessive gas production in the intestinal tract, or intestinal obstruction, etc. leading to decreased intestinal gas discharge leading to increased gas in the intestinal tract, which results in intestinal flatulence and abdominal distension. Obesity is caused by fat accumulation and weight gain due to increased intake, decreased exercise, and so on. Patients with intestinal obstruction have obstruction of fecal discharge in the intestines, as well as slow intestinal peristalsis leading to slow fecal discharge, accumulation of feces in the intestines, leading to bloating, as well as temporary weight gain, but generally fecal discharge can lead to weight loss, which can easily lead people to think that intestinal flatulence causes weight gain. Patients with intestinal flatulence should go to the hospital to find out the cause and be treated under the guidance of the doctor.