Bilateral thoracoabdominal hiatal hernia refers to the abdominal cavity organs, through the diaphragm on the left and right sides of the diaphragm after the lateral thoracoabdominal diaphragm congenital diaphragmatic anatomical defects, into the thoracic cavity compression of the lungs, for the congenital diaphragmatic hernia of a kind, is the result of the interaction between the environment and genetic factors. 1.Thoracoabdominal hiatal hernia diaphragmatic defect shape approximates a triangle. The tip of the triangle refers to the center of the diaphragm, and the bottom of the triangle is at the rib margin of the lateral chest wall. The size of the hiatus varies from as small as 1 cm to as large as an entire hemidiaphragmatic defect. 2. About 85% to 90% of thoracoabdominal hiatal hernias do not have a hernia sac. The contents of the thoracoabdominal hiatal hernia entering the thoracic cavity on the left side are mainly the small intestine, followed by the stomach, colon, and spleen, and on the right side, it is filled by the liver. 3. The severity of bilateral thoracoabdominal hiatal hernias is related to the size of the diaphragmatic defect, lung dysplasia, and the impact of the herniated thoracic contents on the respiratory and digestive tracts. Bilateral thoracoabdominal hiatal hernia, it is recommended to go to the hospital as soon as possible for consultation and treatment.