A newborn baby, that is, a small baby who comes out of the mother’s body from the umbilical cord ligation until 28 days after birth. It is difficult for a baby to adapt to the world and it is easy to have one or another problem, so parents should take good care of it. Common abnormal symptoms of newborns include: anorexia, diarrhea, intestinal flatulence, irritability, lethargy, convulsions, fever with temperature not rising, vomiting blood and blood in stool, apnea, etc. Generally, abnormal symptoms in newborns will not be obvious at first and the speed of change of the disease varies. If ignored, it is likely to cause serious harm to the child’s health. It is best to have a newborn baby under close observation throughout the day. If a caregiver notices that a newborn is different from usual, he or she should be sent to a nearby hospital for examination as soon as possible. At the same time, the newborn should have regular medical checkups as required by the hospital. When feeding a newborn, attention should start with the details. For example, let him develop a correct sleeping position. The supine position is the most suitable sleeping position for small babies. Babies who sleep this way breathe more smoothly and rarely suffocate. Babies who often spit up should sleep on their sides to avoid spit-up milk blocking their mouths and noses.