 Whole-Brain Radiation Therapy WBRT had been a mainstay in the treatment of brain metastases. However, treatment strategy which rely on Stereotactic Radiosurgery SRS has becoming popular in Japan. It is not well understood if the Whole-Brain Radiation Therapy WBRT combined with Stereotactic Radiosurgery SRS resulted in improvements in survival, brain tumor control, functional preservation rate, and frequency of neurologic death. In orer to determine the role of WBRT, we conducted prospective randomized trial between WBRTSRS and SRS-alone for 1-4 brain metastatic patients. 