Colonoscopy is an invasive examination method, which can easily cause damage to the intestinal mucosa and lead to weakened digestive function, and can also lead to symptoms such as intestinal flatulence, nausea and vomiting. To relieve intestinal flatulence, you can take oral medications, such as Mu Xiang Shun Qi Pills, to de-stuff the liver and relieve the symptoms of nausea and vomiting. Diet should also be regulated by eating more light and easily digestible foods, such as millet porridge, egg custard and wontons, which can stimulate intestinal peristalsis and promote the expulsion of gas. You can also apply local heat and massage around the navel to enhance blood circulation, which can also stimulate intestinal peristalsis. It is also helpful to relieve the symptoms of bloating. If you have gastrointestinal disorders, you can drink yogurt and eat probiotics, which are good for improving intestinal flora and reducing the symptoms of abdominal flatulence.