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In view of the data recording and management requirement of high-capacity flash memory for embedded system，a innovate mechanism of partition management has been established by defining and dynamically maintaining partition attribute structure based on the research high capacity NAND flash memory partition, data writing mechanism and the ideas of FAT file management system. The data structure and design flow chart are presented to describe it. To combine with the experiments of actual engineering application, the results show that it can be used to realize the partitioning management of high-capacity flash memory data recording, and rapid detect the target data. It can enhance the efficiency of data and simultaneously keep the dada with integrity, good real-time feature and accuracy, which reduces the difficulty of data processing, Hence, it is significant to provide a new method on the use of high-capacity flash memory with higher practical and popular value.