Abstract: In this paper, a simulative circuit for the DC regulated voltage source in designing experiment of electronic technique is proposed based on Multisim simulation software.From the analysis of the simulative circuit in advance, this experiment can help students understand the circuit theory and behavior, avoid errors in the process of real experiment, the device damage, personal injure and insufficient devices in lab, improve the efficiency of experiments, inspire the students to think deeply about the experiment content and arouse the enthusiasm of their learning.Through the analysis of the simulative curves and data, the feasibiliety of applying the software is proved.