It is not possible to correctly determine whether a cough is cold or hot just by the fact that it gets worse at night. Cold cough and hot cough can cause nighttime aggravation of the phenomenon, cold cough is mainly caused by the wind-cold evil, coughing up white sputum color, will be foamy, will cause headache, nasal congestion, runny nose, and sometimes there will be fear of the cold, fear of cold. Hot cough is mainly caused by wind-heat against the lungs, coughing up phlegm yellow in color, and will be more sticky not easy to cough up, the throat will also have pain, the examination will have edema, congestion, accompanied by thirst, fever, headache, dizziness and other symptoms. It is necessary to determine the heat and cold according to the above situation, and actively treat with appropriate drugs under the guidance of the doctor.