Abstract: This paper combines the objectives and characteristics of theTest System Integrationcourse teaching,and newly opened an automated test system experiment course based on LXI synchronous trigger box.The experimental system hardware consists of PC,LXI synchronous trigger box,and oscilloscope to help students understand the process of automatic test platform construction and network instrument time synchronization.In the course,by introducing the working principle and software design of LXI synchronous trigger box,combined with the actual operation process and observation and analysis of experimental results,deepen the sutdents' concept of network synchronization trigger,experience the similarities and differences between network instrument test and integration test,master the construction of a distributed test platform and software implementation methods.