5 years old child coughing at night is considered to be due to environmental dryness, chronic bronchitis, cough variant asthma and other factors. 1. Dry environment: 5-year-old children living in a dry environment, can make 5-year-old children cough at night, and the fall and winter seasons, the symptoms are obvious, change the indoor temperature and humidity, cough can be relieved. 2. Chronic bronchitis: is due to viral and bacterial infections, allergies and other factors caused by long-term interaction, after the onset of the 5-year-old child will appear long-term, repeated, gradually aggravated cough, usually morning and night before bedtime coughing, daytime is lighter, and there will be sputum, shortness of breath and other phenomena. 3. Cough variant asthma: the etiology is not clear, mostly related to genetic and environmental factors, after the onset of 5 years old children will appear irritating dry cough, night or morning cough, severe cough, can be accompanied by dyspnea, dyspnea and other phenomena. In addition, acute upper respiratory tract infections, gastroesophageal reflux disease and other diseases can also cause 5 and a half year old children coughing at night, it is recommended that children go to the hospital in a timely manner, to rule out non-disease factors, and then receive treatment as soon as possible, so as not to affect the daily life of the cough.