Abstract: Thirty eight cases of brain metastas is from lung cancer were studied. There were 28 males and 7 females, the age rang from 27 to 75 years with anaverage of 55 years. Among them, there were 25 cases in hilus of lung, 11 cases in the peripher of lung, 2 cases in disseminate. Among them, there were 10 squamous cell carcino-ma, 18 adenocarcinoma, 7 small cell carcinoma and 3 large cell carcinoma. A maior-ity of the brain metastases was from adenocarcinoma 18/38(47.4%). Brain metas-tasis occurred earlier in small cell carcinoma than in any other pathologic types. Patient's condition can be improved and the survival period of patient can be pro-longed only by combining surgery, radiation and chemotherapy.