Quick interactive graphic rendering method

The invention relates to a rendering of interactive three-dimensional real graphics and to an image fusion technology, and belongs to fields of graphics and image processing in the subject of computer science and technology. A scene model and a layout model are rendered and the said two rendering graphics are fused. When the layout model is changed, the re-rendering is only carried out on the layout model, and then rendering of the scene model is performed. A quick graphic rendering method for network environment is realized, minimizing the generating time of a preview. With the said quick rendering method, the waiting time of a terminal user can be effectively reduced, which enables the terminal user to view an approximately real-time preview. In addition, the load of rendering server and the operation cost are reduced.