Children coughing from 3:00 to 5:00 in the morning, consider bronchitis, allergic cough, asthma, etc.. 1. Bronchitis: Bronchitis is an inflammation of the bronchial mucosa and its surrounding tissues caused by microbial infections, physical and chemical stimuli, etc. The main symptom is coughing, which starts with a dry cough and then gradually has sputum. The cough is usually morning cough, and there will be bouts of coughing or sputum expectoration during sleep. 2. Allergic cough: allergic cough and allergies have a certain relationship, usually paroxysmal irritating dry cough, in the morning from three to five o’clock in the morning when the temperature is low, by the stimulation of cold air will induce cough. 3. asthma: asthma is a chronic airway disease, mainly chronic inflammation of the airways, mainly manifested by repeated wheezing, shortness of breath, chest tightness and coughing, at night and in the early morning when the attack or aggravation. Children coughing from three to five in the morning, it is recommended to go to the hospital for a detailed examination, for the cause of the symptomatic treatment.