Nasopharyngeal swabs are collected by inserting a swab into the nasopharynx to remove secretions for related tests that can diagnose diseases such as the common cold and bronchitis. Nasopharyngeal swabs are a commonly used test. Typically, a nasopharyngeal swab is collected by using a swab that is gently and slowly inserted into the nasopharynx and left for several seconds to aspirate localized secretions, then rotated to remove the swab and place it in a transfer medium for a medical test, and then perform the associated test. Nasopharyngeal swabs can clinically help doctors diagnose whether the examinee is infected by pathogenic microorganisms such as bacteria and rhinoviruses, and are useful in the diagnosis of diseases such as the common cold, bronchitis, pneumonia, and laryngitis. In addition, some examinees may experience transient manifestations such as nausea and dry heaves during specimen collection, which can be relieved on their own within a short period of time. Secondly, it is generally necessary to abstain from food and water for 1 hour before sampling. It is recommended that those who need to undergo nasopharyngeal swab examination should know the relevant matters in advance and give certain cooperation to the doctor so as to avoid delaying the diagnosis of the disease.