The invention provides an interactive scene simulation system realized by means of a computer and virtual simulation software, and simultaneously provides a scene virtual simulation method. The interactive scene simulation system established by the method can really, vividly, and accurately reflect characteristics, forms and layout of elements in an actual scene; meanwhile, by means of the interactive function, the interactive scene simulation system can replace an entity sand table to perform project demonstrating operation, overcomes the defects of complex manufacturing process, longer period, higher cost, difficult update and modification, larger occupied space, inconvenient carrying, easy damage in the carrying process and the like of the entity sand table, and also can combine database technology, geographical information technology and multi-media technology, provide multiple kinds of technical support, provide establishment and assistance of related information in the process of applying, managing, planning and deciding a corresponding building system for a user, promote application value, prolong the service life and greatly improve the value/cost ratio.