设系统Ａ由Ｋ个相互独立的元件Ｂ１，Ｂ２，…，ＢＫ和一个转换开关组成的贮备系统，设元件Ｂ１，Ｂ２，…，ＢＫ的寿命服从参数为λ泊松分布，λ已知或未知，设转换开关为成败型元件，可靠性ｐ已知或未知．设在λ未知时，对元件寿命有样本Ｘ１，Ｘ２，…，Ｘｎ，在ｐ未知时，对转换开关有成败型试验数据（Ｎ，Ｓ）．本文研究此贮备系统可靠性的ｆｉｄｕｃｉａｌ置信限． Suppose that the system A consists of K independent reserve components B1, B2, ..., BK and a changeover switch, and the lifetimes of the components B1, B2, ..., BK are given by λ Poisson distribution, λ is known or unknown , Set the transfer switch as the success or failure of components, reliability p known or unknown. Assuming that λ is unknown, there are samples X1, X2, ..., Xn for the life of the component. When p is not known, there are test data (N, S) for the transfer switch. This article studies the fiducial confidence limits for the reliability of this reserve system.