The harmful effects of belly button rubbing are causing gastrointestinal dysfunction, aggravating inflammation and abdominal pain. 1. gastrointestinal dysfunction, such as long-term belly button rubbing, may lead to gastrointestinal gas disruption, thus causing gastrointestinal dysfunction, constipation, abdominal pain and other problems, severe may also cause intestinal obstruction. 2. aggravate inflammation, if there is appendicitis, aggravate inflammation will make the inflammation spread faster, make the condition more serious, and increase the difficulty of treatment. 3. aggravate abdominal pain, when rubbing the navel in an incorrect way or technique, it will lead to the aggravation of the patient’s abdominal pain, but also make the diagnosis of the disease more difficult, especially for children, the situation will be more serious. Abdominal pain, abdominal distension and other symptoms, it is recommended to go to the hospital in a timely manner, early formal treatment.