Most babies with hypotonia are caused by neurological damage, such as brain damage caused by lack of oxygen. Babies with hypotonia mainly show symptoms such as abnormal coordination, slow manual dexterity and muscle weakness. 1. Abnormal coordination: babies with low muscle tone will lie on their backs when they are lying on their sides, which can easily lead to mouth and nose aspiration or even choking. 2. Manual bradykinesia: Normal babies can control their bodies well, while babies with low muscle tone will move their arms and legs uncontrollably on their own, which is very much related to the change of muscle tone. 3. Muscle weakness: When hypotonia occurs, the baby will show obvious weakness in breastfeeding and sucking, and difficulty in swallowing. After 4 months, babies with hypotonia will show obvious strain and delay in lifting their head, sitting and turning over. When you suspect that your baby has hypotonia, you should consult a doctor in time. You can take drugs such as brompheniramine under the doctor’s guidance to relieve the condition, and then actively rehabilitate your baby with the doctor’s training program at a later stage.