Baby sleep dry cough may be the environment temperature is not suitable, allergic cough, respiratory tract infection and other reasons. 1. Unsuitable ambient temperature: when the baby sleeps with low indoor temperature or dry air, the baby’s pharynx feels uncomfortable and shows irritating dry cough. 2. Allergic cough: the baby belongs to the allergic body, often allergic to inhalation allergens, such as dust mite allergy, dust mite parasites in the moist environment, do not pay attention to the bed sheets and covers clean, the bed sheets and covers contain more dust mites, the baby produces an allergic reaction to the symptoms of dry cough. 3. Respiratory tract infection: baby body resistance decline, by viruses, bacteria, mycoplasma, chlamydia and other infections, can cause respiratory tract infection, may make the throat area and the airway is stimulated to a certain extent, at night there are symptoms of dry cough. Baby sleep dry cough causes more, frequent dry cough, serious cases to go to the hospital to check the cause and then targeted treatment.