Abstract: The computer-aided design （CAD） technique is one of important developments in computer application. CAD technique has already become an important branch of computer science. Special language for electronic circuit analysis is the foundation of computer-aided circuit design （CACD） and/or computer-aided circuit analysis （CACA）.Electronic circuit analysis language （ECAL）, a special language for circuit analysis, is comparatively simple and convenient for engineering application. Statements of ECAL are executed explanatorily by FORTRAN language. So far, ECAL can be used to make DC, AC and transient analysis of a circuit, and the results of DC analysis can be regarded directly as initial conditions for AC and transient analysis.Both linear and nonlinear elements can be taken into account in ECAL. Linear elements may consist of resistors, capacitors, inductors, mutual inductors, independent current sources, independent voltage sources and dependent current sources under voltage control or current control. Nonlinear elements may include diodes, transistors and nonlinear resistors. Therefore, this language is suitable to the analysis of linear circuits or systems as well as nonlinear ones.