Laryngeal cartilage tenderness is the most common cause of dyspnea and wheezing in infants, with a higher incidence in boys than in girls. Symptoms A high-pitched tremulous wheezing during inhalation is the hallmark feature of chondromalacia. The wheezing worsens when the child cries, eats, and is in the supine position. It begins at 2-4 weeks of age, progresses to a peak at 6-7 months of age, and resolves at about 2 years of age. The majority of children have feeding difficulties, which are associated with gastroesophageal reflux. In moderately severe cases, there is spitting up, recurrent vomiting, and occasional coughing or airway obstruction. Electronic laryngoscopy is performed to clarify the larynx and, if necessary, under general anesthesia to exclude other co-morbidities. Most of the children only have mild laryngeal tinnitus, no abnormal diet and normal weight gain, so they can be left untreated, but they need to pay attention to diet and nutrition, calcium and cod liver oil. For children whose breathing, development and feeding are affected, early surgery should be performed. Supraglottoplasty is the best choice for different types of children. The procedure is performed under general anesthesia via a supported laryngoscope, using a carbon dioxide laser to remove excess mucosa and reduce the obstruction of the vocal folds by the epiglottis, which effectively improves the child’s breathing and eating.