目的：探索骨转移癌止痛放疗的最佳分割方式。方法：将３９例骨转移癌疼痛患者分为Ａ、Ｂ两组（Ａ组１９例，Ｂ组２０例），采用不同分割方式进行放疗，Ａ组：每次２００ｃＧｙ，每周５次，共３０００ｃＧｙ·１５次；Ｂ组：每次３００ｃＧｙ，每周３次，共３０００ｃＧｙ·１０次。结果：Ａ组有效率为５７．７％，Ｂ组有效率为８４．０％，经统计学处理，Ｐ＜０．０５。结论：采用“每次３００ｃＧｙ，每周３次，共３０００ｃＧｙ·１０次”的分割方式对骨转移癌疗效较好 Objective: To explore the best way to separate painful radiotherapy of bone metastatic carcinoma. Methods: Thirty-nine patients with bone metastatic pain were divided into two groups: A and B (19 in group A and 20 in group B). Radiotherapy was performed in different groups. Group A: 200cGy each time, 5 times a week for a total of 3000cGy · 15 times; Group B: 300cGy each time, 3 times a week for a total of 3000cGy · 10 times. Results: The effective rate was 57.7% in group A and 84.0% in group B, which was statistically significant (P <0.05). Conclusion: The method of “300cGy each time, 3 times a week, a total of 3000cGy · 10 times” has a better curative effect on bone metastases