Present invention relates to motion vector prediction multiplexing design method for in standard decoder, 1, firmware transmitting a avs_flag sign to MVP module, 2, adopting deblocking lower embedded subblock format, 3, taking adjacent block messages module pair frame field self adaptation sign poke, to make two different standard proceeding same processing, to realize multiplexing, 4, taking reference macroblock messages design all messages of parallel macroblock always taking from the first one reference picture in reference picture macroblock movement messages cache, in updating also saving to first reference picture, 5, the design to adjacent block data stream updating system, to make multiplexing required adjacent block information content down to the least, reducing times for reading external storage. The advantages are realizing compatibility of H,264 with AVS video coding standard MVP function, not only to ensure validity but also greatly to reduce decoder hard ware area. Said invention can reduce cache by 75 %, and realize real time decode to high resolution image.