If a newborn baby has a whining voice, it is mainly due to the following reasons. Firstly, it is caused by respiratory infections. If the newborn has acute bronchitis or acute bronchopneumonia, the respiratory tract will produce phlegm, and the phlegm will block the respiratory tract, especially the upper airway, which will cause the throat to whine and whine. In this case, nebulized inhalation is needed to remove the phlegm. Secondly, it is caused by congenital laryngeal cartilage dysplasia, due to which the airway collapses because of the poor development of the laryngeal cartilage, so that when breathing, the airway will be narrowed, which will lead to whistling in the voice. Newborns can be treated with calcium supplementation, such as calcium gluconate oral solution.