The　rotary　kiln　control　of　cement　production　is　a　complicated　physical　chemistry　course　of　reaction,　which　has　the　characteristics　of　big　inertia,　pure　time-delay　and　nonlinearity.　There　is　no　satisfactory　effect　controlled　by　traditional　strategy　and　methods　in　the　system;　while　single　intelligent　method　is　difficult　to　adapt　to　the　global　control　for　such　kind　of　system.　First,　the　characteristic　and　application　are　introduced.　Then　through　the　compare　between　Fieldbus　Control　System　(FCS)　and　Multi-Agent　theory,　the　comparability　on　technical　characteristic　and　architectural　characteristic　could　predicate　that　FCS　is　the　genetic　platform　of　Multi-Agent　theory.　A　three-layer　composite　Multi-Agent　control　network　used　for　rotary　kiln　process　control　is　constructed　based　on　PROFIBUS　technology.　©　2011　IEEE.