Many　applications　require　micro-vibration　measurement,　especially　multi-points　detection　at　long　distance　in　real-time.　In　this　paper,　a　micro-vibration　measurement　approach　based　on　digital　holographic　interferometry　is　proposed　for　niiddle-low　frequency　detection.　It　can　be　used　to　monitor　irregular　frequency/amplitude　vibration　in　selected　region　over　10m　away　simultaneously　and　synchronously.　A　series　of　experiments　were　conducted　including　real-time　measurement　of　300　Hz,　1　kHz,　2　kHz　and　3　kHz　constant　frequency/amplitude　periodic　vibration,　precision　and　frequency　response　tests　with　calibration　of　LDV,　1　kHz　irregular　amplitude　vibration,　irregular　frequency/amplitude　vibration　as　well　as　the　real-time　measurement　and　simultaneous　display　of　multi-points　vibration.　The　experimental　results　demonstrate　the　feasibility　of　the　proposed　method　and　reveal　its　unique　advantages.　(C)　2013　Elsevier　GmbH.　All　rights　reserved.