The virtual teaching lab is an open and networked virtual experimental teaching system built by virtual simulation technology based on the docking and rendering of MARS software and model and the production and demonstration of AR panorama case. It is the digitization and virtualization of various existing teaching laboratories. In this lab, students can freely configure, connect, adjust, and use virtual experimental equipment to carry out various experimental operations. Meanwhile, the lab provides real-time feedback and evaluation to help students better understand the process and result of experiment. The virtual teaching lab isaproduct of the combination of modern educational technology and experimental teaching, which provides students with a new learning experience and helps them improve their learning effect and practical ability.