Abstract: Space recorder exists high-energy particle reverse.A high capacity NandFlash image recorder with variable matching length correctable RS code is proposed.SRAM array backup and dual bus storage structure is established.According to variable resolving of the image data and the page characteristics of NandFlash storage system, variable matching length of RS code programming method is proposed to correct limited bytes of random error.Then the image data source, error correcting codes and flash storage array are in organic combination.According to the long burst error, fixed cycle data interleaving method is proposed.The fixed parameter experiment show that the proposed algorithm has low complexity, the storage speed is up to 1.44 Gbps, read speed is up to 1.2 Gbps, and error correction ability every page is up to 30 byte and the SNR is improved by more than 2 dB.