The difference between acute laryngitis and chronic laryngitis lies in the different causes, clinical symptoms and treatments. 1. Different causes: acute laryngitis is an acute infectious disease, acute laryngitis may also be caused by acute bronchitis or acute pharyngitis. Chronic laryngitis is caused by the spread of inflammation in neighboring organs, such as the nose, sinuses, tonsils, trachea, etc., noxious gases, excessive use of the voice, improper phonation and so on. 2. Symptoms are different: acute laryngitis main symptoms are hoarseness, laryngeal pain, increased laryngeal secretions, children can have chills, fever and other systemic symptoms. Children may have chills, fever and other systemic symptoms. Children may be life-threatening and need to pay attention to timely medical treatment. The main symptom of chronic laryngitis is also hoarseness, and the patient’s throat is prone to recurrent dryness, pain and foreign body sensation. 3. Treatment is different: acute laryngitis secondary bacterial infection, the systemic application of broad-spectrum antibiotics, congestion and swelling is significant, the systemic application of glucocorticoids, such as methylprednisolone succinate. Chronic laryngitis is generally applied locally glucocorticoid nebulization therapy, such as inhalation with budesonide suspension. Acute laryngitis should be actively treated to avoid delayed transformation into chronic laryngitis, whether acute or chronic laryngitis, should follow the doctor’s instructions standardized treatment.