Abstract: This paper introduces the composition of the network virtual experiment platform and the division of the four levels of virtual experimentation area，and proposes a new self-adaptive adjustment mechanism of network virtual experimentThis mechanism can not only collect real-time information of the students in the virtual experiment，but also evaluate the results of the studyIt can be based on the evaluation data to adjust degree of difficulty，so that students can complete the experiment better and master the experimental knowledge and experimental skills，and teachers can also timely grasp the actual situation of the studentsSelf-adaptive adjustment mechanism provides a new research direction for the virtual experiment teaching