Current research has found that the 9-valent HPV vaccine can produce high levels of antibodies that provide long-lasting protection, with an expiration date of about 5-10 years. However, the expiration date of the 9-valent HPV vaccine may be affected by a variety of factors, such as the timing of the vaccination, the vaccination dose, and the frequency of the vaccination, etc. The specific situation varies from person to person. The specific situation varies from person to person. Since the HPV 9-valent vaccine has been on the market for only a few years, whether this vaccine has a longer protection expiration date needs to be further verified. With age, body functions and resistance will decline, and the antibody effect of the vaccine will gradually decline, but generally will not disappear completely. If the individual has stronger immunity, the immune effect is maintained for a longer period of time and the coverage is also longer. It is important to note that even after vaccination, regular cervical cancer screening is also required. TCT cytology and HPV high-risk virus testing are both cervical cancer screening programs. If there is any abnormality, you should also actively go to the regular hospital for further diagnosis and treatment to prevent the recurrence of precancerous cervical lesions or cervical cancer.