Abstract: The study analysed radiotherapeutic effect of 106 tonsil carcinoma patients influence effective factor, and failure causes. The five years and ten years survival rate were 45.2%, 31.4%, respeclively. The clinical stage with or without clinical metastatic lymph-node, irradiation does had important significanscein association with prognosis pathologicalclassification remission or residual of the primary lesion and nech metastasis after radiation wcer of no significance in association with prognosis. The main cause of failure was remote metastasis.