Abstract: Flash Memory is the main storage medium of Solid State Disk, but its lower write speed can not meet the high-speed data transmission requirements of the system, thus affecting the overall performance of Solid State Disk. To improve the write bandwidth of flash memory array, this paper designed a viable structure based on the analysis of working principle of Flash device, pipelining technology and high band-width buses technology. At last, it estimated and verified the improvement of bandwidth after adopting this solution.