Lack　of　interface　compatibility,　high　cost,　and　high　complexity　make　the　network-based　intelligent　system　hard　to　build　and　maintain.　This　paper　presents　a　design　idea　for　the　multi-sensor　system　of　the　network-based　intelligent　pro-node,　with　special　emphasis　on　standardized　transducer　interface　and　open　network　communication.　To　realize　and　enhance　the　field　information　processing　ability　of　the　device,　the　concept　and　a　prototype　of　IDP　(Intelligent　Data　Pro-node)　are　proposed.　Based　on　the　IEEE1451　standard,　DSP,　ARM　and　HPI　communication　technology,　a　network-based　intelligent　pro-node　design　is　introduced.　The　Hw/SW　structures　and　the　network　interface　are　discussed.　To　meet　the　demands　of　high　reliability,　networking　and　intelligence,　a　multi-parameter　IDP　is　introduced.　Experiments　show　the　system　is　stable　and　has　real　time　capability.