Abstract: With the recently increasing number of optional treatments for breast cancer, evaluation of assessment tools for the prognosis of breast cancer is needed to stratify patients from prognostic risk and to select the most appropriate treatment. Two types of assessment tools are currently available: one is based on traditional clinical and pathological factors and the other is gene-expression profiling. This review summarizes different assessment tools for the prognosis of breast cancer. This review also discusses the current progress in the field as well as future developments.