Nucleic acid testing swabs are not harmful to the body. Nucleic acid test swabs are generally general medical sterile swabs, which are produced and used after a strict and effective sterilization process to ensure that no harmful bacterial components remain on the swabs. At the same time, nucleic acid test is to use cotton swabs to collect pharyngeal swabs or nasal swabs, and generally do not apply any reagents on the cotton swabs, but use sterile new cotton swabs. In addition, the swabs used for nucleic acid testing are one swab per person, are single-use, and are usually not reused. The time the swab stays in the pharynx or nose during the test is at most 10 seconds under normal circumstances, and it will not cause allergy due to friction. To summarize, the swabs used for nucleic acid testing are not harmful to the body, and during the epidemic, one should do a good job of personal protection, wear a good mask when going out, and actively cooperate with the nucleic acid testing, so as to avoid infections that may bring about an impact on oneself or the society.