A　novel　dual　watermark　scheme　for　image　tamper　detection　and　recovery　is　proposed　in　this　paper.　In　the　proposed　watermarking　algorithm,　we　embed　the　watermark　information　into　the　original　image　using　the　algorithm　of　the　LSB　(Least　Significant　Bit)　and　the　DWT　(Discrete　Wavelet　Transform).　The　basic　principle　of　this　scheme　is　to　compress　each　block　of　the　using　SPIHT.　First　of　all,　we　embed　the　bit　stream　into　the　watermark　image　using　the　DWT;　secondly,　scrambling　and　embedding　the　bit　stream　into　LSBs　of　corresponding　offset　block.　By　using　our　algorithm,　if　the　attackers　destroy　the　watermark　information,　which　is　embedded　the　least　bit　of　the　watermarked　image　in　case;　we　could　extract　the　watermark　information　using　DWT　to　tamper　recovery.　Experimental　results　demonstrate　that　our　proposed　dual　watermark　technique　is　efficient,　and　recover　tampered　block　data　with　satisfied　image　visual　quality.　©　2010　IEEE.