A newborn baby crying indicates that it is able to breathe normally and therefore crying is normal. Babies do not establish real respiratory function when they are in the mother’s womb, they do not need to breathe on their own, and the alveoli are in a closed state, whereas in the newborn, due to the stimulation of air, the baby’s thorax opens up, and the lobes of the lungs open up. Air flows into the lungs for the first time, which is the baby’s first voluntary breathing, and as the air from the lungs is expelled outward, it flows through the vocal cords and makes a crying sound. If a newborn baby does not cry, it may be due to asphyxia for various reasons. This is a dangerous situation and requires the doctor to take measures to first clean out the airway and give appropriate stimulation. If the situation is serious, it can lead to respiratory difficulties, lack of oxygen, etc. In severe cases, the development of brain cells can be affected, and even life-threatening.