According to the problem of misjudgment instruction and slow writing and reading data rates of single-chip FLASH, a high speed and high reliability data recorder based on FPGA was designed. 4-wire combinational instructions verification mechanism, with the dithering elimination technology of double counter was adopted to prevent instruction misjudgment in this recorder; adopting the method of batch testing management invalid block which shortens the time of verification. In consequence the application of alternating bi-planar cross-write pages and pipeline technique, the FLASH achieve the writing speed of 29. 92 MB/s. Reading mechanism of shaking hands with double FIFO cross cache effective guarantee read speed. By the practical test, the recorder has accurate instruction judgment, great write-read speed, the practical application value is great.