If a month old baby has the symptom of dry vomiting, as parents do not worry too much is usually due to indigestion, eating a lot of air, esophageal reflux, etc. caused by. 1, indigestion: due to the incomplete development of the internal organs of the baby’s body for one month, the baby is easy to cause stomach discomfort after eating breast milk and milk powder and symptoms of indigestion, dry vomiting symptoms are normal, as parents do not worry too much, breastfeeding mother in the diet is recommended to light diet. At the same time, it is recommended to pat the baby’s back after feeding to make it exhaust. 2, eat into the air: If the baby is dry vomiting symptoms due to eating into the air, it is mostly due to the feeding method. Babies should be fed in a timely manner when they are hungry, if they are too hungry they will cry obviously and will be very anxious when sucking, easily inhaling a lot of air into the esophagus. 3. Gastroesophageal reflux: This is mainly due to the immaturity of the infant’s digestive system and may also be related to the position of feeding the infant. It is recommended to let the upper half of the baby’s body be in a 30-45° tilt when feeding, so that the milk can flow smoothly into the small intestine during feeding. Dry heaving in a one-month-old baby is usually caused by improper diet and it is recommended to pay more attention when feeding the baby.