Aiming at the abstract circuit response caused by the parameter variation of the components of the circuit theoretical analysis, this paper has designed a simulation of the transient circuit on the LabVIEW platform, accomplishing the analysis of the first-order transient circuit and the second-order transient circuit in simulation. Through the custom control, the user could make up circuit model conveniently, but also could change the parameter of the component by changing the value of the control and thus the respective change will be presented on the window in the form of values, waveforms or a table. As a result, the students’ understanding to the circuit analyzing method was enhanced.