Cervical cancer vaccine is categorized into bivalent, quadrivalent and nine-valent, and the difference between them is mainly the different types of HPV prevented, different applicable age and different protection effect. 1. Different preventive HPV types: bivalent cervical cancer vaccine can only prevent HPV16 and HPV18 infections. Quadrivalent cervical cancer vaccine can prevent HPV16, HPV18, HPV6, HPV11. Nine-valent cervical cancer vaccine adds HPV31, HPV33, HPV45, HPV52 and HPV58 on the basis of quadrivalent cervical cancer vaccine. 2. Different applicable age: bivalent and quadrivalent cervical cancer vaccines are suitable for women aged 9~45 years old, while nine-valent cervical cancer is suitable for women aged 16~26 years old. 3. Different protection effect: bivalent cervical cancer can only prevent cervical cancer and can not prevent genital warts, quadrivalent cervical cancer can prevent cervical cancer, but also be able to prevent part of the genital warts, the nine-valent cervical cancer vaccine preventive effect is better, but also can prevent most of the genital warts. The cervical cancer vaccine is very important for the prevention of cervical cancer, and it is recommended that women choose the appropriate vaccine according to their own situation.