There are a variety of reasons why a newborn’s tongue is short, and common causes include a short tongue tie. The majority of short tongues in newborns are due to congenital developmental malformations where the tongue tie is too short resulting in a short tongue. It can also be due to tongue muscle atrophy caused by eating too hot food or improper diet. If the shortness of the tongue is mild and does not affect the newborn’s ability to eat, pronounce words accurately, or socialize normally, it can be left untreated and further observed. If the tongue tie is too short, it will affect the child’s feeding and pronunciation. In this case, the child should be examined by a doctor in a timely manner, and after the diagnosis is clear, the tongue tie is usually corrected by surgery. There may also be other reasons for short tongue in newborns, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or therapy under the guidance of the doctor.