Breast cancer is the most common cancer and the primary cause of cancer mortality among women in Korea. Early detection of tumor is more likely to provide the option of surgical resection, which offers the best chance for cure. Although screening clinical breast examination is recommended by some organizations, there are currently no convincing data to support that self or clinical breast lead to improved survival in breast cancer. Screening mammography is the single most effective screening method for breast cancer. Numerous studies confirmed that screening mammography contributed to a decline in mortality from breast cancer. Digital mammography is helpful in women with dense breast tissue while its advantage over film mammography across age groups is yet to be demonstrated. Breast ultrasonography is currently a supplement to mammography. Combining breast ultrasonography to mammography improves the accuracy of breast screening but the additional benefit is marginal. The role of MRI in diagnosis of breast cancer is rapidly increasing, especially in high risk women. In this review, we provide a broad overview of screening methods for breast cancer currently available.