We introduce the WebGL technology and Three.js which is one of WebGL application framework, we also describe the design and implementation of basic structure and each module of interactive platform，and propose an algorithm of loading 3D model to load the OBJ model by parsing data of model’s vertex, face, normal vector and so on. At last we do the multbrowser testing and loading speed testing, the result shows that this platform can run correctly on Firefo, Chrome and Opera without modifying any code, its loading speed is fast and the platform can display the model smoothly.