Earthquakes　have　serious　destructive　and　catastrophic　impact　on　people＇s　lives,　because　they　always　happened　suddenly　and　unpredictably.　Thus,　it　is　necessary　to　conduct　some　research　on　urban　earthquake　emergency　corridor　planning.　This　paper　analyzes　the　actual　traffic　demands　of　earthquake　emergencies　and　comes　up　with　the　determinant　factors　of　earthquake　emergency　corridor　planning.　In　addition,　this　study　proposes　some　principles　on　earthquake　emergency　corridor　planning　based　on　the　consideration　of　those　determinant　factors.　At　the　same　time,　a　quantitative　evaluation　model　based　on　road　reliability　is　provided　in　this　study.　As　a　case　study,　EEC　planning　practice　for　Beijing　is　conducted.　©　2011　ASCE.