Abstract: ObjectiveTo understand the status of knowledge related to breast cancer and its influencing factors among women in Gaomicity for health education of breast cancer in the population.MethodsWith randomized cluster sampling, across-sectional study was conducted to collect information of women aged 25 to 70 years in Gaomi.ResultsFor 7 850 women inves tegaed,only 15 12% had higher awareness level1 85.8% of the women were aware of breast cancer,75.4% knew that the screening could detect breast cancer early and 77.6% knew the screening could increase survival rate.The breast cancer screening rate among the women was 43.4%.The six factors related to high cognition of breast cancer were age (OR=0.63,95% CI=0.692-0.843),education(OR=1.545,95% CI=1.385-1.723),living area(OR=1.210,95% CI=1.022-1.434),worker(OR=1.928,95% CI=1.543-2.410),other occupation(OR=21028,95% CI=1.420-2.897), medical care personnel(OR=9.828,95% CI=7.316-13.536).ConclusionThere is a considerable inadequacy in breast cancer konwledge among the women in Gaomi,and breast cancer screening rate in this population is low.