Classroom　discipline　is　a　complex　and　variable　dynamic　process,　classroom　problem　behavior　always　leads　classroom　discipline　problem　that　will　affect　teaching　quality.　The　simulation　on　classroom　discipline　of　multiagent　system　based　on　complex　system　theory　uses　dynamic　simulation　platform　NetLogo.　The　result　of　simulation　shows　that　this　method　can　reproduce　the　dynamics　of　discipline　behavior＇s　three　stages　in　ecological　classroom.　This　simulation　provides　forceful　support　for　the　classroom　discipline　management　of　teachers.　©　(2011)　Trans　Tech　Publications,　Switzerland.