This is due to gastrointestinal dysfunction, which is related to the dysbiosis of intestinal flora and the decrease of gastrointestinal peristaltic emptying ability. Mostly seen in the abdomen after the cold, drinking milk, soy milk and other easily fermented gas-producing food. This situation can be adjusted from the following aspects: first, drink less milk, soy milk and other foods that are prone to fermentation and gas production; second, you can massage your belly button in a clockwise direction to promote gas discharge; third, you can take trimebutine maleate plus rectified intestine or gold diflucan to adjust.