The specific one needs to be judged based on the person’s constitution, tongue and pulse, and the eight steel dialectic. Cough can generally be divided into cold cough and hot cough. Hot cough is mostly caused by wind-heat, mainly manifested by thick and yellow phlegm, red tongue coating and constipation. Cold coughs are mostly caused by wind-cold and are mainly characterized by a white and greasy tongue coating and white and thin sputum. Therefore, in Chinese medicine, cough cannot be judged purely on the basis of the duration of the cough. 1. If the cough is yellow and sticky at night, and the dryness and bitterness of the mouth are obvious, this is a time to consider phlegm-heat cough. 2. If the cough is obvious at night. If you cough foamy sputum or thin sputum often, sometimes accompanied by a chill in the back, you have a cough caused by cold drinks in the lungs. 3. Coughs caused by wind-cold tend to manifest as coughing with thin sputum, shortness of breath and itchy throat, and sometimes headache, nasal congestion, runny nose, fear of cold, slight fever, no sweating, and aching limbs. 4. Coughs caused by wind-heat are mostly characterized by a coarse cough, or a hoarse cough, thick or yellow phlegm, and unpleasant coughing, often accompanied by fever, dry mouth, and sore throat. 5. Cough caused by phlegm and dampness mostly manifests as a cough with a lot of phlegm, a heavy cough, white sticky phlegm or thick or thin phlegm, especially coughing and phlegm in the morning, often with a whirring sound in the throat, chest tightness and vomiting of clear water, not wanting to eat, etc. The symptoms of coughing need to go to the hospital in time to avoid delaying the best time.