The node voltage method is one of the commonly used circuit system analysis methods, but when short circuit occurs in the circuit and the short-circuit current is the control quantity of the controlled source, it is not possible to correctly solve such circuits using the standard form of the traditional nodal voltage equation. This paper discusses and analyzes such issues, and it is concluded that the correct result can only be obtained if the short-circuit current (the control current) is used as the current source without changing the circuit structure. And a reasonable explanation is given for this situation. This interpretation expands the application range of the circuit solution through standard form of the node voltage method, and improves the general solution form of the node voltage method, being more helpful to the future class teaching.