When the phenomenon of coughing when sleeping hot occurs, it is usually due to: external environmental factors, cough variant asthma, allergic cough, bronchospasm and so on. 1. External environmental factors: First of all, sleeping hot means feeling hot when sleeping, and factors such as high indoor temperature or dry air can easily cause sleeping hot and coughing. You can drink some warm water in moderation or adjust the room temperature to relieve it. 2. Cough variant asthma: usually related to genetics and the environment, can appear chest tightness, shortness of breath, coughing, breathlessness and other manifestations, so there can be a cough when sleeping hot. 3. Allergic cough: such as indoor dust or pollen and other allergens, the patient inhaled, it will make the mucous membrane of the throat stimulation, and then appear sore throat, cough and other manifestations, so there will also be sleeping hot cough. 4. Bronchospasm: often secondary to bronchitis or recurrent infections of the upper respiratory tract, when the local area is severely stimulated, it may produce the phenomenon of sleeping hot on the cough, and there will be fatigue, edema of the throat and other manifestations. In short, the emergence of sleeping hot cough, should be based on the specific causes of specific analysis, symptomatic treatment.