Laryngeal stridor in newborns is caused by congenital dysplasia of the laryngeal cartilage, which is mainly related to the child’s preterm birth, calcium deficiency and other reasons. This condition is mainly related to premature birth, calcium deficiency, etc. In this case, give the child more calcium supplements, such as calcium gluconate oral solution, as the child grows older, the laryngeal tinnitus will slowly improve. In addition, the child’s laryngeal stridor is caused by other malformations, such as congenital large blood vessel sling, due to congenital blood vessel developmental abnormality, resulting in compression of the trachea, thus causing tracheal stenosis, which will cause the child’s laryngeal stridor symptoms. This situation should be timely surgical treatment, drug conservative treatment for this situation is not effective.