The main methods of doing a new coronary nucleic acid are nasal swab, pharyngeal swab, deep cough sputum and anal swab. 1. Nasal and pharyngeal swabs: Nasal and pharyngeal swabs usually require extraction of nasal and pharyngeal secretions or examination of the patient’s throat secretions. Nasopharyngeal swabs are usually more accurate than oropharyngeal swabs for nucleic acid testing. However, oropharyngeal swabs are more suitable for mass screening due to their convenience. 2. Deep coughing of sputum: This method relies on the patient coughing vigorously to cough up sputum from the respiratory tract as a sample for testing. 3. Anal swab: The anal swab is taken from the subject’s anus or anal folds to extract secretions for testing. In addition, novel coronavirus testing also includes lower respiratory tract samples, anticoagulant and serum samples, etc. The appropriate testing method can be selected under the guidance of a doctor.