Cough is a symptom in itself, and the new coronavirus cough is mostly dry, along with fever, malaise, sore throat, nasal congestion, runny nose, decreased or loss of smell and taste, conjunctivitis, myalgia, and diarrhea. The clinical classification is divided into four types: light type, ordinary type, heavy type and critical type. Mild type: the patient’s clinical symptoms are mild and no pneumonia is seen on imaging. Ordinary type: Pneumonia can be seen on imaging, but the clinical symptoms are mild. Severe type: there may be shortness of breath with a respiratory rate ≥30 breaths/min; or calm state oxygen saturation ≤93% or progressive exacerbation of clinical symptoms, with imaging showing >50% progression of the lesion within 24-48 hours. Critical type: there is respiratory failure or shock or combined multi-organ failure and other manifestations. It should be noted that the dry cough caused by novel coronavirus infection varies widely among individuals, with some patients showing frequent coughing but others showing mild coughing symptoms. Therefore, patients with a history of exposure to novel coronavirus pneumonia, regardless of the form of dry cough, need to consider the possibility of infection, seek medical attention immediately, and under the guidance of a physician, treat and follow the novel coronavirus prevention and control measures. Coronavirus Pneumonia Prevention and Control. Note: The terms “new coronavirus pneumonia” and “new coronavirus pneumonia” mentioned in this article were renamed to “new coronavirus infection” on December 26, 2022, as announced by the National Health Commission.