Some children do not cough during the day, but when the night comes, they have a coughing fit, which worries their families. The main causes of this condition are upper respiratory tract infections, cold and flu, bronchitis, and dry indoor air. Cough variant asthma: The cough is mainly dry at night, especially in the early hours of the morning, and may also occur after exercise. Coughing with cold: The temperature is generally lower at night, more obvious in winter and spring, and babies may easily catch cold and cough at night when they are not properly covered. At this time, it is important to keep your baby warm and to eat a light diet. Food cough: If you have recently eaten meat, sweets and overly salty food, you will have a cough with a lot of phlegm at night. Bronchitis and pneumonia: Some babies may also suffer from bronchitis and pneumonia after catching a cold, with a heavy cough at night, which seriously affects the child’s sleep treatment, for which medication needs to be actively used to control the situation. The air is too dry: If a child has a cough during the day but not at night, it may be caused by too dry air. The causes of coughing in children are very varied and common, and parents can only get to the root of their child’s coughing problem if they find the right cause.