6-year-old children poop stinks, may be due to bad eating habits, indigestion, intestinal infections and other diseases caused by the following: 1. Bad dietary habits: often eat high protein food, protein in the metabolic process will produce a large number of ammonia-like substances, resulting in heavier stool flavor. In addition, when you eat too cold, too spicy and other stimulating foods, the intestinal absorption function becomes poor, there will also be defecation discomfort, heavy stool flavor and other phenomena. 2. Indigestion: generally caused by gastrointestinal dysfunction, intestinal flora imbalance and other reasons, resulting in eating food in the gastrointestinal tract is not fully digested, a large number of food residues in the intestinal tract, corruption, fermentation, defecation of fishy odor. 3. Intestinal infection: when the intestinal tract is infected with bacteria, viruses or parasites, they will attack the mucosal cells in the intestinal tract, resulting in inflammation and exudation of the intestinal mucosa. When a large number of necrotic inflammatory cells are discharged with the stool, it will cause the fishy odor of the stool. A 6 year old child with smelly stools may also be due to other causes such as gastrointestinal bleeding, so it is recommended to go to the hospital to get a clear picture of the cause of the problem, and to diagnose and treat the problem under the guidance of the doctor.