Flatulence after the abdomen is cold is considered to be caused by gastrointestinal dysfunction, gastritis, gastric ulcer and other diseases. 1. Gastrointestinal dysfunction: Gastrointestinal dysfunction is caused by the interaction of biological, psychological, and social factors, etc. Cold abdomen can also induce gastrointestinal dysfunction, and the patient will have abdominal pain, diarrhea, constipation, flatulence and other symptoms. 2. Gastritis: Flatulence may be aggravated or induced by gastritis after the abdomen is cooled. Gastritis is an inflammation of the gastric mucosa caused by a variety of different etiologic factors, such as stress, drugs, alcohol, Helicobacter pylori, and so on. Triggers include overeating, cold stimulation, mental stress, etc. 3. Gastric ulcer: Gastric ulcer refers to ulcers occurring in the mucous membrane of the inner wall of the stomach or deeper layers, and Helicobacter pylori infection is the main cause of the disease. The triggering factors include smoking, alcoholism, stress, eating spicy food, and getting cold in the abdomen, etc. The patient will have symptoms such as pain in the stomach, loss of appetite, and flatulence. There are more causes of flatulence after a cold abdomen, so it is recommended to strengthen warming measures and seek medical examination to clarify the diagnosis if necessary.