The main abnormalities of the digestive tract are common. 1. Esophageal atresia: vomiting immediately after eating. It occurs right after birth. 2.hypertrophic stenosis of the pylorus: It develops about 2 weeks after birth. 3.Diaphragmatic hernia: due to compression of the gastrointestinal tract after entering the thoracic cavity. 4.Intestinal atresia: persistent vomiting occurs within 1 day after birth. Red Xia, Department of Pediatrics, Bayannur City Hospital 5, congenital intestinal malrotation; intermittent vomiting within a few days after birth, sometimes light and sometimes heavy. 6, congenital intestinal obstruction: progressive abdominal distension, vomiting, delayed or little or no fetal feces excretion.