There are several reasons why babies always dry-heave: 1, improper feeding, whether breastfeeding or formula feeding, because eating too much, too fast and eating a lot of gas and so on, will stimulate the baby to produce dry-heaving and nausea symptoms. 2, the baby to add complementary foods irregularly or the abdomen is cold, are prone to cause babies to appear dry-heaving or vomiting symptoms. 3, in the baby to eat the finger, if the finger into the mouth 4, some diseases, such as laryngitis, congenital pyloric stenosis, gastroesophageal reflux, respiratory infectious diseases, indigestion, constipation, gastrointestinal diseases, etc., will also cause the baby to appear dry heaving, vomiting and other symptoms, this time to take the baby to the doctor in time to find out the cause of the disease, the symptomatic treatment.