Quadrivalent vaccine refers to the cervical cancer vaccine, after the arm does not hurt normal. Quadrivalent cervical cancer vaccine is mainly to prevent HPV6, HPV11, HPV16, HPV18 four kinds of human papillomavirus, can further prevent women’s warts and HPV viral infections, applicable to women aged 9-45 years. Generally, the arm will hurt after the quadrivalent vaccine, which is a normal reaction to the vaccine, and the pain will be alleviated in about 3 days. It is also normal for some patients to have no arm pain after the quadrivalent vaccine. After receiving the quadrivalent vaccine, it is recommended to observe the vaccination hospital for half an hour, and then leave the hospital if there is no abnormality or discomfort. If your arm hurts after receiving the quadrivalent vaccine or if you experience other symptoms of discomfort, such as pain, redness, swelling, low-grade fever, etc., you should give feedback to the vaccinating doctor as soon as possible. After receiving the quadrivalent vaccine, you should also pay attention to rest, and the injection site should not be exposed to water to avoid local infection.