沉浸式学习目前在教育领域已经得到越来越广泛的应用。在K12教育阶段，生物是一门非常重要的学科，实验是其重要组成部分。但是在部分学校实验资源较为欠缺等因素的影响下，有的学生没有亲自进行生物实验的条件，进而在理解方面遇到困难。针对此类问题，本文以人体循环系统为例，采取虚拟现实技术，在三维虚拟环境中为中学生搭建一个可视化学习平台，使用Voxel与DoTween插件，实现了第一人称视角体循环与肺循环的自动漫游，并实现了音频交互，为循环系统的重要知识点添加音频讲解，让学生从视听两个方面了解人体循环系统的工作过程。根据用户体验调查问卷结果可以得出，本文搭建的沉浸式学习环境在易用性、体验性方面有良好表现，学习者可取得较好的学习效果。

At present, immersive learning has been more and more widely used in the field of education. In k12 education stage, biology is a very important subject, and experiment is an important part of it. However, under the influence of factors such as the lack of experimental resources in some schools, some students do not have the conditions to conduct biological experiments in person, and then encounter difficulties in understanding. To solve these problems, taking the human circulatory system as an example, this paper adopts virtual reality technology to build a visual learning platform for middle school students in a three-dimensional virtual environment. Using voxel and dotween plug-ins, it realizes the automatic roaming of the first person perspective of the systemic circulation and pulmonary circulation, realizes the audio interaction, and adds audio explanations to the important knowledge points of the circulatory system, Let students understand the working process of human circulatory system from two aspects of audio-visual. According to the results of the user experience questionnaire, the immersive learning environment built in this paper has good performance in ease of use and experience, and learners can achieve better learning results.