Children’s farting odor is mainly caused by dietary factors, indigestion, acute gastroenteritis and other factors. 1. Dietary factors: children eat too much food containing protein and sugar, may produce more gas, which will cause the phenomenon of farting stinky, after adjusting the structure of the diet can be improved on their own. 2. Indigestion: Overeating or consuming too cold food can cause indigestion, which leads to the retention of food in the intestines for a long time, and when farting, the phenomenon of smelly farts will occur, which may be accompanied by abdominal distension and abdominal pain. 3. Acute gastroenteritis: it may be related to infectious factors, can be acute attack, will make the food in the intestinal tract fermentation, excessive gas production, the emergence of sour smell, will lead to farting is very stinky, also accompanied by abdominal pain, diarrhea, fever and other symptoms. Farting in children is very smelly, and there are other abnormal manifestations, may be the existence of disease factors, it is recommended to consult a doctor for appropriate examination and treatment.