Based　on　the　internet　technology,　it　has　become　possible　to　complete　remote　monitoring　and　fault　diagnosis　for　the　numerical　control　machine.　In　order　to　capture　the　micro-shock　signal　induced　by　the　incipient　fault　on　the　rotating　parts,　the　resonance　demodulation　technology　is　utilized　in　the　system.　As　a　subsystem　of　the　remote　monitoring　system,　the　embedded　data　acquisition　instrument　not　only　integrates　the　demodulation　board　but　also　complete　the　collection　and　preprocess　of　monitoring　data　from　different　machines.　Furthermore,　through　connecting　to　the　internet,　the　data　can　be　transferred　to　the　remote　diagnosis　center　and　data　reading　and　writing　function　can　be　finished　in　the　database.　At　the　same　time,　the　problem　of　the　IP　address　floating　in　the　dial-up　of　web　server　is　solved　by　the　dynamic　DNS　technology.　Finally,　the　remote　diagnosis　software　developed　on　the　LabVIEW　platform　can　analyze　the　monitoring　data　from　manufacturing　field.　The　research　results　have　indicated　that　the　equipment　status　can　be　monitored　by　the　system　effectively.