The ph value of the human body’s large intestine is around 7, which is relatively normal, and the ph value in the intestine is relatively stable in general. The intestinal tract is an important digestive organ of the human body, including the small intestine, large intestine and colon part, the digestive enzymes in the intestinal tract in the alkaline environment, tends to be more active, so the intestinal ph value remains alkaline, is conducive to the human body’s digestion and absorption. The colon is a weakly alkaline environment, the weakly alkaline environment if broken, some flora, especially some beneficial flora balance will be disturbed, or even death, resulting in intestinal flora imbalance. It is recommended to keep a pleasant mood, pay attention to small amount of meals, excessive anxiety and tension, overfilling or excessive hunger will affect the balance of intestinal flora. When the digestive system dysfunction, should promptly consult the gastroenterology department of the regular hospital, to avoid blindly taking drugs on their own.