1.With fever, runny nose and other symptoms – cold, laryngitis, tonsillitis. 2.Continue to cough after a cold – bronchitis. 3.Coughing becomes more severe, abnormal sound appears in the throat, and the symptoms become more obvious at night – wheezing bronchitis. 4.Coughing, inspiratory difficulty, depression of the intercostal muscles when wheezing, a sharp sound can be heard coming from the larynx or trachea when whistling – bronchial asthma. 5. Cough, wheezing and dyspnea with or without fever. -Capillary bronchitis (wheezing pneumonia) 6, shortness of breath, difficult inspiration, ugly face with fever – bronchopneumonia, lobar pneumonia, mycoplasma pneumonia, abscess chest. 7, coughing sound like a dog barking, hoarse voice, inspiratory whistling difficulty – acute laryngitis, immediately to the hospital. 8, often coughing, sneezing, nasal congestion, runny nose, itchy nose, itchy eyes, especially in the spring and autumn, to consider allergic rhinitis. 9, the cold does not heal for a long time with cough, thick nasal discharge, nasal congestion, throat discomfort with phlegm attached, coughing up thick sputum in the morning to consider suffering from sinusitis. 10.If there are no previous signs and symptoms such as sudden onset of violent coughing, difficulty in breathing and bad complexion, pay attention to whether the baby swallowed a foreign object into the whistle by mistake, which can cause death by asphyxiation and must be sent to the hospital immediately.