Uterine fibroids are the most common form of benign uterine tumors in the uterine muscle layer, which had a certain rate of malignancy, but it is rare. The prevalence of uterine fibroids estimates range from 4.5% to 68.6% depending on study population and diagnostic methodology. The prevalence of fibroids has been historically underestimated by epidemiologic studies which focused mainly on symptomatic women, leaving behind a large population of asymptomatic women and women who underreport their symptoms. What investigators don't know was which women who have fibroids will develop clinical symptoms and which women who have an operation of myomectomy will relapse. The purpose of this study is to investigate the prevalence, incidence and risk factors for the development of uterine fibroids in Chinese women.

Inclusion Criteria:

• Current place of residence≥ 6 months;
• No serious mental illness or mental abnormality;
• Those who agree to participate in this survey and cooperate in completing the questionnaire.

Exclusion Criteria:

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This study population is women aged more than 18yrs with or without uterine fibroids from five regions of China. The study time period will conduct from May 1, 2023 - November 30, 2025 to allow for 6 months pre-index for evaluating baseline demographic and clinical characteristics and 24 months post-index, ensuring a minimum of one years follow-up.