The side effects of cervical cancer 2-valent vaccine include local reaction and systemic reaction, of which the local reaction includes local swelling, pain and pus at the needle opening; and the systemic reaction includes dizziness, fever, headache, fatigue, diarrhea, abdominal pain, and generalized rash. Cervical cancer 2-valent vaccine can prevent cervical HPV 16 and 18 human papillomavirus infection, suitable for women between the ages of 9 and 45 years old, there are common side effects of cervical cancer 2-valent vaccination. 1. Local reaction: mainly manifested as redness, warmth, itching, pain and swelling at the injection site, etc. In serious cases, septic skin infection may occur. 2. Systemic reaction: after injection of cervical cancer 2-valent vaccine, dizziness, fatigue, headache, nausea, vomiting, abdominal pain, diarrhea, fever, joint pain and other adverse reactions may occur, only a small portion of the people have side effects, which are usually relatively mild and can be recovered on their own, of which the incidence of serious adverse reactions is relatively low, such as respiratory difficulties, anaphylactic shock, etc.. After cervical cancer 2-valent vaccination, if side effects occur and the symptoms cannot be relieved, you need to go to the hospital in time.