Abstract: Due to the application items of the present gas geological dynamic analysis system were restricted in the site implementation, the gas geological dynami C analysis shall be turned to the network application.The Silverlight platform and WCF RIA Service framework under the RIA technical system of the rich client terminal could provide the high efficient development and application platform for the dynamic gas geology.Thus the layout of the system could be made with a web mode and th e serious space topology of the gas geology could be presented.The suitable TIN delta mesh interpolation algorithm could be applied to correctly reflect the present stat us of the gas geology and the Silverlight template and the template binding could be applied to have the drawings of the rapid dynamic geological symbols.The dynamic gas geological system under the rich client terminal technology could improve the item maintenance efficiency.Thus the mine site safety production level could be comp rehensively improved.The dynamic gas geological system could provide the basis to the application and improvement of the gas geological technology.