A feeling that there is always a throat chirp when breathing suggests that there must be airway spasm. If you do have symptoms of cold recently, such as sneezing, runny nose, or coughing and coughing, consider that there may be acute upper respiratory tract infection, or tracheitis or bronchitis. If you have symptoms, you can take oral anti-cold medicine to treat the symptoms first. If the symptoms improve significantly after 2-3 days, it indicates that the symptoms of upper respiratory tract infection are relatively mild, so you can rest more and drink more water at home. If there is a persistent croup in the throat, it may indicate the presence of bronchitis or bronchial asthma, and further examination should be done at the hospital to do pulmonary function or bronchial diastolic test or bronchial excitation test to further clarify whether there is an airway problem, and further treatment and therapy.