After eating dinner stomach bloating old fart mostly due to food reasons, colitis and other intestinal diseases and intestinal flora imbalance, indigestion and other reasons. 1. Food reasons, if you eat too much high-protein food at dinner, it will lead to increased gas production, such as meat, potatoes, beans, etc. After eating, it will affect the digestive function, increase the gas produced by the gastrointestinal tract, and bloating and farting will occur. 2. Intestinal diseases, if there are colitis, ulcerative colitis, Crohn’s disease and other intestinal diseases, it will affect the normal gastrointestinal mucosal function, affecting the intestinal function, delayed digestion, and then bloating and increased gas production. 3. Other diseases, if there is intestinal flora imbalance, dyspepsia and other conditions, will also affect the intestinal function of the symptoms. For severe cases, it is recommended to consult a medical professional in time.