Puffing and giggling in newborns may be related to physiological reasons such as immature respiratory development, or pathological reasons such as pneumonia and congenital heart disease. 1. Physiological reasons: the respiratory tract of newborn babies is not yet mature, and the respiratory rate can be up to 35-45 times per minute under normal conditions, which can be manifested as puffing and huffing. 2. Pathological causes: If the baby inhales amniotic fluid during labor, it can lead to pneumonia and the phenomenon of puffing; if the baby suffers from congenital heart disease, the phenomenon of puffing can occur, accompanied by symptoms such as purple lips. Parents are advised to take their children to the doctor in time to clarify the cause, and if treatment is needed, standardized treatment should be carried out under the guidance of the doctor to avoid delaying the condition.