From March 1980 to December 1987, 650 patients with non-small cell lung cancers were treated by radiotherapy alone, chemotherapy alone, operation alone, Chinese medicine therapy alone, radiotherapy combined with chemotherapy, operation with radiotherapy operation with chemotherapy. The survival rates of the patients who received operation were obviously higher than radiotherapy alone, chemotherapy alone and Chinese medicine therapy alone groups. No relationship was found between the survival rates and pathological classification, but there was a close relationship between the survival rates and stages.