Based on the design of graphics program language of LabVIEW, a platform of virtual simulationexperiment for Fourier progressional dissolution and compostion of periodic signals and the amplitude-frequencycharacteritic of the RLC circuit, and frequency domain analysis is developed.The simulation software has agraphic user interface where different experimental parameters such as various types of electrical signals andelectronic components are provided for users to adjust. The experimental results show that this simulationsoftware not only realize all functions of the actual circuit experiment box ,but also realize frequence response.spectrum analysis and electrical signal decomposition by changing induence.ln the experiment teaching,thesharing of this visual simulation experiment on the network for online teaching,which is useful for the quality ofstudents’pre-class preview improve the teaching quality effectively.