Abstract: In order to solve the problems in traditional experimental teaching of botany, we constructed a virtual simulation experimentsystem for the development of angiosperm vegetative organs. The system includes some 3D resources, such as virtual simulation re-sources of the paraffin section technology, perspective structure, digital slicing, physiological function, organ reduction and virtual as-sessment, etc. . It can realize online learning, autonomous learning, submission of experimental reports, virtual examination, commu-nication and other functions. By using these resources, we implemented the experimental teaching mode and experiments evaluation of " integration of reality and virtual simulation" . Consequentially, the space and time for experimental teaching have been effectively ex-panded, students􀆳 interest and initiative in learning have been fully aroused, the effect of experimental teaching has been improved, andthe whole process of experimental examination has been covered.

Key words: angiosperm, vegetative organs, virtual simulation, experimental teaching