The baby’s tummy heaving when breathing is common in the following cases: 1, belongs to the normal phenomenon, the baby is young are in abdominal breathing, in addition to the tummy heaving, no respiratory increase, fever, cough, etc., with the growth of age from abdominal breathing gradually transformed into thoracic breathing. 2, lower respiratory tract infection, when there is bronchopneumonia, wheezing bronchitis and other diseases, most at the same time have expiratory respiratory distress, will The baby’s mental and feeding response is poor, so you need to go to the pediatrician in time. 3, intra-abdominal disorders, when there is hepatoblastoma or other abdominal tumors, the volume of the abdominal cavity itself increases, when touching occasionally feel the hard mass, if necessary, to the hospital to perform abdominal ultrasound and other related tests to clarify.