本文提出了包括若干定理的增量网络理论，并以此理论来处理模拟电路故障诊断的定位问题．当代集成电路的重要特征是含有各种受控电源．本文着重研究含有受控源的模拟电路故障诊断，并得出了相应的结论． In this paper, an incremental network theory including several theorems is proposed and used to solve the localization problem of analog circuit fault diagnosis. An important feature of contemporary integrated circuits is the inclusion of a variety of controlled power supplies. This article focuses on the fault diagnosis of analog circuits with controlled sources, and draws the corresponding conclusions.