Laryngeal chondrodysplasia is usually huffing and puffing all the time. In newborns, due to laryngeal cartilage dysplasia, the supraglottic tissues (epiglottis, arytenoid cartilage, and aryepiglottic folds) collapse into the larynx during inhalation, resulting in a narrowing of the breathing passages, which produces a whirring, phlegm-like sound as the air passes through the respiratory tract, a symptom that will remain, and usually disappears around the age of 1 ½ to 2 years. The whistling sound caused by laryngeal cartilage dysplasia can be exacerbated when the newborn is lying on his or her back, breastfeeding, crying, or when he or she has an upper respiratory tract infection. If there is no delay in feeding the newborn, the newborn is in good spirits and has normal weight gain, no special treatment is needed. If the growth of choking on milk and feeding difficulty occurs due to laryngeal cartilage dysplasia in newborns, it is necessary to seek medical attention in a timely manner, and if necessary, follow the doctor’s instructions for surgical treatment in order to ensure the normal growth and development of newborns.