指出了传统建模方法难以通用的局限性，通过分析已有的通用建模理论和方法，着重研究了通用建模理论——联结理论的基本思想和建模过程，结合一电阻网络系统的建模实例，详细说明了联结理论中的通用建模过程，并指出了该理论目前存在的问题，提出了新的研究方向．对势－流变量与跨越－通过变量的概念进行了系统的讨论和分析． The limitations of the traditional modeling methods are pointed out. By analyzing the existing general modeling theories and methods, the basic modeling and modeling process of the general modeling theory - linking theory is emphasized. Combined with the construction of a resistance network system The example of the model details the general modeling process in the theory of coupling and points out the existing problems of the theory and puts forward a new research direction. The potential - flow variables and leaps - through the concept of variables were systematically discussed and analyzed.