Abstract: o explore the affecting factors in cervical erosion. Methods: Cluster randomized sampling method for selecting subjects and multinomial logistic regression were used to analyze these data． Results: The prevalence of cervicalerosion Ⅰ，Ⅱ and Ⅲ degree was 12.47%，7.95%，3.70% respectively, and the affecting factors included age，times of bathe in a whole year, times of artificial abortion, hygiene situation before sexual intercourse, and infection of ureaplasma urealyticum. Conclusion: In order to prevent cervical erosion effectively， artificial abortion should be avoided as possible as they can, good sanitary habits should be built up and infection in reproductive tract should be detected and treated as early as possible too.

Key words: Cervical erosion, Affecting factors, Multinomial logistic regression