Citizens who need nucleic acid testing only need to pay attention to the official WeChat account of Healthy Xianning, enter the column of "Services", then click on "Nucleic Acid Reservation", enter the information registration page according to the instructions, and enter personal information such as name, ID number, contact number and address, so as to submit the testing requirements to the registration platform and generate a barcode of "Personnel Pre-registration". After scanning the code with the sampling terminal, the sampling personnel will automatically display the personnel pre-registration information and complete the sampling entry. Pre-registered barcodes are permanently valid once generated, and can be used for many times. A mobile phone can be registered and reserved by many people.