Coughing in the middle of the night needs to be divided into the first half of the night and the second half of the night two kinds of cough, the first half of the night cough for the day the coldest climate, the lowest temperature, the heaviest yin qi, yang qi the worst stage, traditional Chinese medicine believes that belongs to the cold cough. In the second half of the night, as the temperature gradually rises, Yang qi is gradually released, Chinese medicine is considered to be hot cough. The combination of cold cough and hot cough to identify and treat, can effectively relieve the symptoms of cough in the middle of the night. Western medicine believes that cough in the middle of the night belongs to allergic cough, especially bronchial asthma, tuberculosis, most often seen in the night and early morning cough. Allergic cough is mainly due to the night vagus nerve excitation, bronchial constriction, stimulation of the respiratory tract and cough. Tuberculosis cough is mostly dry cough at night, little sputum, hot flashes, night sweats, and even blood in the sputum, which belongs to the deficiency-heat cough. Allergic cough belongs to the cold and damp cough, can also be used with traditional Chinese medicine to achieve better results.