Dry cough during the day to sleep without coughing for a variety of reasons, including: poorer air quality during the day, eating irritating foods such as chili and mustard during the day, excessive use of the voice during the day, and respiratory infectious diseases. 1. Poor air quality during the day: haze, second-hand smoke, dust and other air pollution is more serious, and the range of activities during the day is larger, the chances of exposure to formaldehyde, fumes and other physical and chemical irritants is greater, the above factors are easy to stimulate the airway to produce a dry cough. 2. Eating irritating foods during the day: If you eat irritating foods such as chili peppers and mustard during the day, it is also easy to cause a dry cough. 3. Excessive use of the voice during the daytime: Certain professions (such as teachers) can cause pharyngitis and dry cough if they talk a lot during the daytime, or work pressure, emotional stress, anxiety and other reasons can also trigger a dry cough. 4. Respiratory tract infectious diseases: such as acute upper respiratory tract infection, acute bronchitis, due to localized infection of the respiratory tract during the day, airway mucus secretion, secretions in the trachea increased significantly, the need to use protective coughing action will be discharged out of the body. Dry cough during the day to sleep without coughing there are a variety of other reasons, such as coughing symptoms are more serious, it is recommended that the patient to the hospital, to clarify the cause of the disease.