提出了虚拟现实软件实现方法的概念，利用交互方式的,比较，阐明了虚拟现实与仿真的区别，通过计算机三维实体造型和真实感环境泻染技术，实现了虚拟环境建模，通过融入增强现实的思想，把握虚实结合尺度，将基于图象的方法与基于建模的相结合，从而改善了眯拟环境下交互的实时性。

Bring forward the concept of realizing virtual environment based on software ;Illuminate the differences between virtual reality and simulation by comparing modes of interaction;Implement method to model virtual circumstance by 3D Modeling and rendering ,Illuminate the steps to build virtual scene with model based method: Describe the frame of object with geometry principle, Add material and light to the frame, Render it to virtual scene which look like reality;Advance the method to improve the real time of virtual scene, In order to make scenes more efficiently rendered, Combine levels of details with fuzzy math , Display the objects in different distance at different levels of detail: Render object in far distance in low details, Render closer object in fuller details. Using virtual and enhanced reality technology, Combine image and model to improve real time: Take pictures of the static object such as background, Construct the virtual static scene with texture mapping technology, Immerge the objects modeled to be manipulated in the virtual static scene, Merge modeling based method into image based method to improve real time of interaction.