There is no fastest way to expel gas in children, and it should be chosen reasonably according to individual situation. Flatulence is usually caused by dietary factors, indigestion, intestinal obstruction, etc. Dietary habits can be adjusted, the abdomen massaged, the use of medication, gastrointestinal decompression, etc. can be used to promote the smooth expulsion of gas. 1. Dietary factors: If the food is too cold and eaten too quickly, it will lead to abnormal gastrointestinal peristalsis and flatulence, which needs to be solved by adjusting dietary habits and eating warm food. 2. Indigestion: You can massage children’s abdomen to promote their intestinal peristalsis, so that the gas in the stomach is discharged. Probiotics such as Bifidobacterium Triphylium can also be used under doctor’s guidance to promote food digestion and absorption and discharge of flatulence. 3. Intestinal obstruction: If a child has an intestinal obstruction, the contents cannot be discharged and the child will also have flatulence. At this time, it is necessary to be hospitalized in time, through the gastrointestinal tract decompression and other methods of treatment. If children have abdominal flatulence symptoms continue to be unable to relieve, it is recommended to go to the hospital in time to see a doctor, under the guidance of the doctor for Fan’s treatment.