Abstract: By studying three dimensional discrete wavelet transform(3D DWT) core algorithm in deepness,the paper divides it into three one dimensional discrete wavelet transforms(1D DWT).Based on the implementation of 3D DWT software,a VLSI architecture of paralell design is produced.It needs three double port RAM to store the temporay results and transpose the matrix,then builds up a pipelining model composed of three 1D DWT.In this design the finite state machine(FSM) is well used to control the flow.Compared with the serial mode,the experimental results of post synthesized simulation show that the method of design is correct and effective.It can increase processing speed about 66%,and work with 59?MHz,meeting the real time needs of video encoder.