Acute laryngitis has the potential to infect others, and infectiousness is limited to continuing laryngitis caused by viral or bacterial infections. People with acute laryngitis can infect others by droplet or aerosol transmission when coughing, and may also infect others by mouth, nose and food contact. Common symptoms of acute laryngitis are hoarseness, cough, and sputum, which can progress upward to pharyngitis and rhinitis and downward to tracheitis and bronchitis. Pediatric patients may experience episodes of laryngospasm and laryngeal obstruction due to structural and physiological factors, which need to be taken seriously and treated aggressively. It is recommended that patients seek timely medical treatment after the onset of the disease, under the guidance of professional physicians to clarify the diagnosis and cause of the disease, and then carry out targeted standardized treatment.