From Feb.1985 to Feb.1988,76 patients with squamous cell carcinoma of the lung treated at the Department of Therapeutic Radiology in Kyungpook National University Hospital were available for the analysis of this study. All patients received radiation of 4000cGy-6600cGy with curative aim. The overall rate of complete response was $25.0\%$ and partial response was /452.6\%$ The complete and partial regression of tumor was $14.3\%$ in patients treated with dose below 5000cGy and $84.1\%$ in the group treated with dose above 5000cGy (p<0.01). The complete response was seen only in the group of patients received radiation at least 6000cGy. The patterns of failure were as follows. The rate of initial intrathoracic recurrence was $52.6\%$ in patients with complete response. The overall rate of failure was $68.8\%$. Distant metastasis was found in $47.4\%$ of patients. Bone, contralateral lung, and brain were common metastatic sites in decreasing order All of the distant metastases and $80\%$ of local recurrences were found within