Abstract: In accordance with the requirements of the analog circuit experimental teaching system，in order to help students to further master the analog circuit signal generation and processing method，by abstracting specific circuit elements into mathematical models，an analog circuit signal generation and processing teaching system is developed based on LabVIEW software． According to the content of the teaching experiment，three experimental modules are designed． Each module contains different experimental items，covering the basic part and actual application of analog circuit signal generation and processing． The design principle of the experimental module is given，and the experimental principle and content of the different modules are discussed． The specific experimental case module is taken as an example to explain the design and use of the lock-in amplifier． This system integrates the basic knowledge of signal generation and processing of analog circuit and expands the application of lock-in amplifier，instrumental amplifier and linear transformation． The practical application shows that the experimental system based on LabVIEW meets the experimental teaching requirements of the course and has achieved good teaching results．

Key words: education informationalization, experimental teaching system, analog circuit basic experiment, LabVIEW