From Oct. 1985 through 1989, 38 patients with malignant pleural effusion were treated with 60Co moving strip technic. Complete response was 19/38 and marked response 10/38. The 1-,2-, and 3-year survival rates were 42.9%, 33.2% and 4.8% in radiation only group. The 1-, 2-, and 3 year survial rates were 47.1%, 35.3%, 11.8% in radiation combined with chemotherapy group. It is proved that radiation be surperior to intracavitary chemotherapy or radiation combind with systemic chemotherapy. This treatmet is safe and well tolerated by patients.