目的介绍宫颈癌多固定野三维适形放疗铅挡块与多叶准直器的方法。方法将宫颈癌多固定野三维适形放疗铅挡块与多叶准直器的应用进行比较。结果宫颈癌多固定野三维适形放疗铅挡块与多叶准直器对肿瘤组织和危及器官的实际受照剂量的影响不同。结论在多固定野三维适形放射治疗中,应根据肿瘤组织的放射致死剂量、危及器官的放射耐受剂量等科学、准确、有效地使用铅挡块和多叶准直器。 Objective To introduce the method of multi-fixed three-dimensional conformal radiotherapy lead block and multi-leaf collimator for cervical cancer. Methods Cervical cancer multi-fixed three-dimensional conformal radiotherapy lead stopper and multi-leaf collimator application comparison. Results Cervical cancer multi-fixed field three-dimensional conformal radiotherapy lead stopper and multi-leaf collimator on the tumor tissue and organs at risk dose actually affected. Conclusion In multi-fixed-field three-dimensional conformal radiotherapy, the lead stop and multi-leaf collimator should be used scientifically, accurately and effectively according to the radiation lethal dose of tumor tissue and the organism’s radiation tolerance dose.