Nucleic acid test nose and throat generally refers to the new crown nucleic acid test, the difference between the two is mainly due to the different parts of the collection, sampling swabs and samples taken. Detecting the nose is mainly to send the sampling tool into the nasal cavity, such as the inner nasal cavity, the surface of the nasal mucosa and other parts of the collection of secretions as a specimen for testing. Testing the throat mainly involves collecting secretions from the posterior wall of the pharynx, the lateral wall, the tonsillar crypts, and other areas, and using these as specimens for testing. Although the samples taken by both methods are different, they can both effectively detect whether or not they are infected with the new coronavirus, and both have high accuracy. The specific choice of which method to use varies somewhat depending on the region and the specific requirements for epidemic prevention and preparation of related equipment.