The newborn’s throat like phlegm may have the following conditions: 1, congenital laryngeal chondrosis, may be due to the mother’s lack of calcium during pregnancy resulting in laryngeal cartilage dysplasia, the baby may hear a whirring sound in the throat when eating milk or crying, like phlegm, but in the case of quiet sleep, side sleep sound is not, this is congenital laryngeal chondrosis, generally do not need to worry, you can give the baby vitamin D, after 6 months of life symptoms may not. The baby can take vitamin D orally, and the symptoms may be gone after 6 months of life. 2, there may be respiratory secretions, also in the milk will hear the whirring sound, some children will have mouth spitting foam, cough, nasal congestion and other respiratory symptoms, to go to the hospital for consultation to let the doctor to see if there is a respiratory infection, timely treatment.