Sleeping without coughing and getting up coughing can be caused by physiologic or pathologic factors. Commonly include: colds, cough variant asthma, chronic bronchitis and so on. 1. Physiological factors: after a long period of sleep, the mucous membrane of the throat is usually dry, and if you get up and are stimulated by the cold, dry air, it is easy to trigger the phenomenon of coughing. 2. Colds: usually caused by viral infections. After a whole night’s sleep, the respiratory tract will hold a lot of phlegm, so in the morning, under the stimulation of phlegm, coughing symptoms will occur. 3. Cough variant asthma: cough symptoms may appear in the morning due to temperature changes, dryness of the respiratory tract, dust and other irritants around the stimulus, which may cause significant cough symptoms in the morning. 4. Chronic bronchitis: it is a chronic non-specific inflammation. Respiratory mucosa is stimulated by viruses, bacteria, mycoplasma and other pathogens, the release of inflammatory factors, wake up in the morning, the respiratory center is excited, can be manifested as get up coughing, coughing sputum. The phenomenon of sleeping without coughing and coughing may also meet with other reasons, it is recommended to consult a doctor in time. A clear diagnosis of the cause of treatment.