Abstract: In the experiment of forest entomology, it is difficult to carry out the experiments because of its long testing period, high cost and great danger. This paper describes the virtual simulation experiments in forest insects diversity survey and individual development process of Buasra suppressaria Guenee, and points out the necessity of virtual simulation technology in experimental teaching of forest entomology. Practice showed that through the virtual simulation technology can not only do experiments that are difficult to be arranged in reality, but also stimulate the activity and creativity of students, and allow them to set different parameters to obtain different experiment results, play the initiative and creativity of students to improve the experimental teaching effect.