A method for realistic and real-time rendering of complex scene in internet environment, comprising: generating sequences of scene-object-multi-resolution models, a scene configuration file, textures and material files, and a scene data list file; compressing the sequences of scene-object-multi-resolution models, the scene configuration file, the textures and material files, and the scene data list file and uploading the compressed files to a server; downloading, at a client terminal, the scene-object-multi-resolution models, the scene configuration file, the texture and material file, and the scene data list file in ascending order of resolution and rendering the scene simultaneously; dividing, in rendering the scene, a frustum in parallel into a plurality of partitions, generating a shadow map for each frustum, filtering the shadow maps to obtain an anti-aliasing shadowing effect; and the shadow map closest to a viewpoint is updated on a frame-by-frame basis and updating frequency decreases for the shadow maps distant from the viewpoint, wherein the shadow map closest to the viewpoint has the largest size, and the size of the shadow map decreases for the shadow maps distant from the viewpoint.