Abstract: Wavelet transform and multi-resolution based compression algorithm can be used to achieve high compression ratio,so it is widely applied to volume data compression.On the compression algorithm,the paper investigates the method directed to GPU-based data reconstruction,with purpose of transferring only the compressed data from CPU to GPU.Because an advantageous data structure is crucial in GPU-based data reconstruction,we propose such a data structure named Nested-Tileboard,which can be represented as rectangle texture.A multi-resolution data construction method is accordingly proposed based on Nested Tileboard to store intermediate data and reconstruction result.The paper also presents Nested-Tileboard volume rendering method,to allow the reconstructed data rendered directly,and the volume data reconstruction and rendering processed seamlessly.