A cough without phlegm cannot be distinguished from a hot or cold cough because of this. Regarding hot cough or cold cough, this is the dialectical method in Chinese medicine. In cold cough, the sputum is mostly white, thin and foamy, and the patient mostly has headache, nasal congestion, clear runny nose, fear of cold and wind, etc. Hot cough is caused by the loss of lung qi due to external wind-heat, and the sputum is yellow and sticky, making it difficult to cough out the cough without sputum. In addition, the fever is often heavy, accompanied by a sore throat, so it is important to treat the fever and detoxify the body. In addition, if the symptoms of coughing are serious, you need to use cough and phlegm medicines to promote the discharge of phlegm in order to relieve the symptoms of coughing, and it is recommended to take Pulmonary Cough Compound, Fresh Bamboo Leach Liquid, or Niuhuang Serpentine and Chuanbei Liquid orally, which are all effective for hot cough. In addition, it is also necessary to drink more water to promote the elimination of toxins from the body, which is also good for promoting the recovery of cough. It is important to eat more fresh fruits and vegetables to strengthen the body’s immunity and promote recovery from the disease.