Abstract: Currently simulation on problems of emergency evacuation had been researched a lot with the technology of computer simulation.It can evaluate and optimize auxiliary schemes of evacuation by simulating and comparing different schemes.In existing simulating methods or system,there are some problems when inputting and editing the schemes,which include the schemes’ information is not intuitional,the extent of visualization is not enough and the editing is less flexible.It is difficult to input and edit complex evacuation schemes fast under accident scenes.Based on the technology of geographic information system,we propose a method to visualize the inputting and editing evacuation schemes.Firstly,according to the actual process of evacuation,we conclude and define the features related to scenes or schemes of evacuation and then make them digital.Secondly,by classifying the geometric properties of features mentioned above,we make schemes visualized.On the basis of these works,we finally present a semi-automatic editing method and a testing method of legitimacy about the evacuation to implement fast inputting and flexible editing of schemes under accident scenes.