Purpose: To report the treatment result for lung cancer with brain metastasis. Materials and Methods: 117 patients with brain metastases from lung cancers were treated by radiotherapy alone or surgery followed by radiotherapy from January, 1987 to December, 1993. Radiotherapy were given with the dose of 23～40Gy (whole brain irradiation) then followed with 15～24Gy booster. Results: The median survival period and one year survival rate were 9.5 months and 62.5% in surgery plus radiotherapy group and 5.7 months and 14.2% in radiotherapy alone group(P