Abstract: In order to facilitate the embedded system experiment, a new type of virtual simulation experiment system is designed, which is composed of server-side software and a certain number of monitoring terminals. The monitoring terminal adopts a dual-core structure, including the tested core and the monitoring core. The tested core is responsible for running the application code written by the user, and the monitoring core is responsible for monitoring and controlling various ports of the tested core. The C/S model is adopted between the server and the monitoring terminals, and the B/S model is adopted between the server and the client. Students use a browser to login the server to complete the online virtual simulation of the experimental program and observe the operating phenomenon of virtual peripherals. The system device is assembled in the server cabinet, which is easy to manage and store. Compared with the traditional hardware laboratory, the cost is greatly reduced. It effectively compensates for the limitations of laboratory opening time and the number of experimental equipment. It also provides powerful help for students to master the content of experimental courses and deepen their understanding of experimental courses.