It is not normal for a newborn to have cold feet, because if the newborn is kept warm after birth, or if the newborn is a full-term healthy baby, the blood circulation is very abundant and the hands and feet are very warm, so there will be no cold hands and feet. Most newborns have cold hands and feet due to pathological reasons, for example, if they have cold syndrome or septic shock, they will have cold feet and often have other areas of skin efflorescence and poor mental status, often with symptoms such as lower milk consumption and a desire to sleep. For cold feet, we should promptly find the pathological factors and deal with them accordingly. If it is caused by cold syndrome, we should promptly carry out insulation treatment. If it is caused by septic shock, anti-infection treatment should be carried out in time.