论述了研制半主动雷达寻的空空导弹训练弹的必要性，提出了训练弹设计方案的基本要求及关键所在，在分析导弹工作过程的基础上，指出必须提供具有逻辑功能的模拟信号和故障设置。通过举例对准备程序和点火程序逻辑功能电路的探讨提出了训练弹电路设计方案的基本构想。 The necessity and key of training missile design scheme are pointed out. Based on analyzing the working process of missile, it is pointed out that it is necessary to provide analog signal and fault setting with logic function . Through the example of the preparation process and the logic circuit of the ignition program, the basic concept of the training circuit design is proposed.