The main reasons for chin tremors in newborns are as follows: a. Exclude chills due to cold weather, low room temperature or the child’s chills due to fever, which require monitoring of body temperature. Second, the neonatal nervous system is not well developed, the inhibitory function of the central nervous system is relatively poor, can appear chin trembling. Third, some clinical diseases lead to chin tremors in newborns, such as hypoxic-ischemic encephalopathy or seizures, which can lead to chin tremors in children. In this case, the child may be accompanied by developmental delays as well as impaired consciousness. If the newborn shaking is caused by a disease, a visit to the neonatology or child neurology department is required. Fourth, when a newborn is slightly stimulated, such as sound or bright light, the child will experience muscle twitching or jumping in shock, which is also related to the fact that the newborn’s nervous system is not well developed.