Abstract: Objective To explore the effects of service system for women and children health care on breast cancer screening. Methods A random cluster sampling was taken in the central districts of Wuhan, and 33 019 women within 35~59 years old were chosen to be study samples.Servise system for women and children health care was utilized to organize and manage breast cancer screening.Breast cancer screening method was carried out by combination of clinic breast examination with molybdenum target X-ray and high-frequency ultrasound examination.All lesions and prognosis were determined by pathology.Screening rates,review rates,breast cancer detection rate were used to evaluate the effect of service system for women and children health care on breast cancer screening. Results 30 478 of 33 019 women participated the breast cancer screening.The screen rate was 92.30%.The rates of screening molybdenum target and ultrasound examination was 92.47%.All patients who were diagnosed as breast cancer or suspected cancer through combination of clinical examination,molybdenum target X-ray and ultrasound underwent surgery.25 of women were diagnosed as breast cancer by pathology.The detection rate of the breast cancer screening was 82.03/100 000. Conclusion Depending on the breast cancer screening process organized by health service system for women and children care,the adherence to screening in women was increased and the medical technology was integrated better,which greatly enhanced the quality of breast cancer screening.