Intestinal colic is a paroxysmal pain located in the area around the umbilicus. Intestinal colic combined with nausea and vomiting are reflexive symptoms, and this reflexive nausea and vomiting is called reflexive gastrointestinal symptoms. Many abdominal diseases including cholecystitis, appendicitis, pancreatitis and other lesions can cause reflexive gastrointestinal symptoms, which are manifested as nausea and vomiting. Another condition is intestinal obstruction. When the disease gradually worsens with abdominal pain, the symptoms of nausea and vomiting can gradually worsen, and even vomit some yellow liquid with fecal odor, which should be alert to the occurrence of intestinal obstruction.