Children waking up from a nap with a cough may be caused by cold weather, bronchitis, allergic reactions, sinusitis and so on. 1. Cold weather: children’s pharyngeal mucosa is rich in capillaries, easily stimulated by cold air or foreign objects, causing the pharyngeal cilia to move and cause a protective cough. 2. Bronchitis: after the bronchial tubes are infected by pathogenic microorganisms such as bacteria or viruses, there will be inflammatory reactions such as congestion and edema. When the child wakes up and inhales the air, it will increase the inflammation of the bronchial tubes, and the pharynx lacks of water lubrication and replenishment and coughing symptoms. 3. Allergic reaction: when the child wakes up, the pharynx through breathing, contact with the outside air in the dust and other allergens, will stimulate the mucous membrane of the pharynx and cause coughing. 4. Sinusitis: inflammation of the sinus tissues, will lead to the narrowing of the nasal passages and breathe less gas, but when waking up through the mouth to open and inflow of too much air to stimulate the pharynx, it will cause the child cough performance. Children wake up a sleep cough, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, to give targeted treatment or treatment.