A throat swab for nucleic acid testing requires a medical professional to take a sample of the posterior wall of the pharynx and other parts of the mouth with a sampling tool and send it for testing. Nucleic acid test pharyngeal swab is a routine inspection method, let the examinee open his mouth, fully expose the tonsils and the posterior wall of the pharynx, use the pharyngeal swab in the pharyngeal isthmus on both sides of the tonsil fossa and the posterior wall of the pharynx, rotate, swabbing, and then put the sampled swab into a sample tube, screw the cap tightly and send it to the test. Nucleic acid pharyngeal swab sampling needs to be examined by a medical professional to avoid the pharyngeal specimen coming into contact with the tongue, oral wall, teeth and other parts of the mouth during the collection process. At the same time, it should be noted that two hours before the collection of pharyngeal swab specimens to avoid eating, so as to avoid vomiting during the collection process. Personal protection should also be strengthened during the collection process by wearing a mask and keeping a distance of more than one meter.