In　this　paper,　an　off-axis　digital　holography　multi-frame　image　super-resolution　reconstruction　method　is　presented.　Each　low-resolution　hologram　will　have　small　displacement　in　different　directions.　The　obtained　low-resolution　holograms　are　processed　iteratively　with　the　super-resolution　algorithm　to　obtain　the　super-resolution　hologram,　and　then　the　amplitude　image　is　reconstructed　from　the　super-resolution　hologram.　The　imaging　results　show　that　the　resolution　of　the　reconstructed　image　after　super-resolution　processing　is　obviously　improved,　because　of　increase　of　high-frequency　information　in　the　high-resolution　hologram.