It is normal for newborns to cry, but in addition, it is also considered to be caused by hunger, wet diapers, mosquito bites, or illness. For most newborns, crying is a normal reflex that helps expand the alveoli and establish autonomous respiratory function. At the same time, baby crying is also a way to express feelings and requirements. When it is hungry, wet diaper, or mosquito bites, it will appear to cry, but it is mostly relieved after reasonable feeding, changing diapers, and insect repellent. In addition to the above, some of the newborn children cry related to diseases, such as vitamin D deficiency rickets, meningitis, intussusception, neonatal pneumonia, neonatal umbilical cord infection, sepsis, neonatal intracranial hemorrhage and so on. Persistent crying occurs when the disease puts the child in an uncomfortable state. Parents are advised to actively investigate physiologic factors when their child cries. If the crying is persistent or accompanied by other uncomfortable symptoms, timely medical treatment should be sought in order to control the condition and prevent the disease from affecting the child’s growth and development. The following are some examples of the symptoms that may be associated with crying