The clinical adverse reactions to the cervical nine-valent vaccine include the following: first, painful symptoms may occur at the injection site, and local numbness may occur, and there may be redness and swelling on the surface, and clinically some people may have elevated body temperature, which generally does not exceed 38°C. Second, some people may experience dizziness, headache, nausea, and muscle and joint pain, and some people may experience more severe fainting. Secondly, some people may experience dizziness, headache, nausea and muscle and joint pain, while others may experience fainting in a more serious way. Therefore, after receiving the nine-valent vaccine, you must stay in the hospital for half an hour to observe and leave the hospital only if you are not uncomfortable. It is also recommended that you must eat breakfast before receiving the vaccine, or in the case of afternoon vaccination, you must eat at noon before receiving the vaccine, and it is recommended that you do not get nervous when receiving the vaccine and relax your mind to reduce the occurrence of adverse reactions.