Taking virtual three-dimensional simulation technology into LNG filling station staff training system, not only improve the efficiency of new employees, but also ensure the safe operation of LNG filling stations. The article describes the composition of the simulation system, designing model of each sub-module, NURBS modeling software methods and demonstrate interactive features of simulation system.The simulation system can be used for teaching and training, skills training staff to operate the new posts and accident drills and personnel rotation. Because of its vivid, lively and infectious, it can better mobilize the enthusiasm of students, improve the efficiency and quality of staff training and provide some technical support for the safe operation of LNG filling stations. Set of nature, science, flexibility in LNG simulation training system that can be better used in teaching and training related to LNG filling stations, is an effective means of improving staff skills.