To overcome the shortcomings of commercial virtual simulation software including the need of high hardware configuration, expensive price and function shortage in secondary development, an OpenGL-based construction virtual simulation platform was studied and developed based on existed graphic engine of 4D-GCPSU. Its main features include reality rendering of 3D model by processing material, texture, lighting etc. 3D dynamic simulation and animation display with double buffer technique, creating and controlling of virtual scene with human-computer interaction technology. The platform has been applied and tested in practice engineering projects and can produce high quality 3D realistics model and 3D animations. It can be adopted in the development of 4D virtual construction and dynamic management systems. Therefore, the platform is of practical application value.