In view of the limitation of the poor universality and scalability and high cost for traditional mode of ship simulation training system,virtual three-dimension environment on ship simulation training based on WebGL is presented in this paper.It adopts a graphics engine called Three.js to render 3D virtual interactive interface on the web page,logging into the system by a browser.Thus a cross-platform,free plug-in and efficient interface of simulation training on ships is acquired.This method can be applied to other simulation training field as well.