The preliminary analysis has been made of 73 patients who were treated in the Department of Radiation Therapy at Korea University Hospital for the lung cancer from April 1981 to December 1983. The patients were treated via Co-0 teletherapy unit and the doses were 5,400 rad/6 week for the curative, 3,600~4,500 rad/2 1/2~3 week for the palliative treatment. Thirty two (32/63=51%) patients have been for curative, 25/63 (40%) were for palliative, and 6/63 (9%) were for post-perative radiation. A post-adiation treatment, 28/63 (53%) were able to follow from 2 months to 3 yrs. During the follow up, chest X-ays and/or CT scans were taken and 22/27 (81.4%) of patients were responded more than 50% of tumor regression one month following completion of radiation.