The　inherited　coherent　noise　degrades　the　imaging　quality　and　resolution　in　digital　holographic　microscopy.　A　method　to　reduce　coherent　noise　is　proposed　in　this　paper.　Firstly,　a　series　of　digital　holograms　are　recorded　by　laterally　shifting　camera.　Secondly,　the　different　holograms　are　reconstructed　individually,　and　the　additional　lateral　displacement　and　phase　shift　of　the　reconstructed　images　due　to　the　change　of　camera　position　are　corrected　by　using　the　phase　compensation　and　image　registration　algorithms.　Thus,　multiple　identical　retrieved　images　of　object　are　obtained　with　different.　coherent　noise　distributions.　Finally,　a　reduction　of　coherent　noise　is　achieved　by　a　proper　averaging　process　for　amplitude　and　phase　image.　The　feasibility　of　this　method　is　demonstrated　by　imaging　of　the　resolution　targets　and　the　red　blood　sample.　(C)　2012　Elsevier　B.V.　All　rights　reserved.