At present, browsers are becoming more and more mature in 3D graphics display technology. Using WebGL's third-party library Three.js to display fish 3D models is not only simple and convenient but also has obvious cross-platform advantages. Through the study of Three.js, the problems of building a fish 3D display system in the past technology, such as fewer functions, complicated construction, the need to install plug-ins to browse, and cannot to be used across platforms, can promote the related applications of fish visualization. This research mainly uses 3ds MAX software to build the fish model and herbarium model, realizes loading and interaction of models through the Three.js library, and combines Three.js with Bootstrap framework, PHP technology, MySQL, and other technologies to build the fish model display system. After completing the system construction, deploy the system to the Tencent Cloud server to complete the performance test. The results show that: this system realizes fish model search and viewing, paging display, second loading in an online environment, step-by-step loading of fish herbarium scene models, viewing fish models in Mobile VR mode, and users uploading models and displaying models online. , sharing models and other functions, with good application value. This research can provide references for fish modeling, fish 3D model compression, fishery large model scene loading, and fishery visualization.