介绍了反应堆设计中屏蔽计算方法，描述了测量孔道的物理计算模型，针对反应堆物理设计中提出的实际问题进行了计算，并对有关的参数作了选择，得到了符合精度要求的满意结果。结果表明，测量孔道对屏蔽是有影响的，只要采取一定的防护措施，可使剂量当量率达到规定的容许范围内，以确保反应堆的安全。这些结果为反应堆屏蔽设计提供重要的参考价值，为反应堆的安全性提供了科学依据。 The shielding calculation method in reactor design is introduced. The physical calculation model of measuring tunnel is described. The practical problems raised in physical design of reactor are calculated, and the relevant parameters are selected. Satisfactory results are obtained according to the accuracy requirements. The results show that the measurement of the channel has an impact on the shielding, as long as some protective measures can be made, the dose equivalent rate within the specified allowable range to ensure the safety of the reactor. These results provide an important reference value for reactor shield design and provide a scientific basis for reactor safety.