Objective To study the methods and mechenism of surgical treatment of breast cancer with synchronous metastasis.Methods 7 cases of breast cancer patients with synchronous metastasis treated by surgery from Jan.1997 to Dec.2007 in our hospital were analyzed retrospectively and the literature was reviewed.Results The median survival time was 27.4 months for the 7 patients who underwent surgery and 20.0 months for the 157 patients who didn't undergo surgery.Conclusion Surgery can prolong survival time of breat cancer patients with metastasis.