Infantile Subglottic Hemangiomas (ISH) are rare and potentially fatal. Many treatments have been described for this condition. Propranolol is a new therapeutic alternative, with successful results in skin and airway infantile hemangiomas. Case study: The case of an infant with ISH and 90% blockage of his airway is presented. The patient underwent a tracheostomy procedure and then treated with oral propranolol, showing a good response after a month of treatment, presenting 10% obstruction and consequently, ending the tracheostomy early. Conclusion: The discovery of the effect of propranolol in the ISH has revolutionized the management of this condition, displacing steroids and surgery as first-line treatments. This study discusses the current ISH management.