A　number　of　mountain　tunnels　suffered　significant　damage　to　various　extent　during　the　2008　Wenchuan　earthquake　in　China.　Damage　ranging　from　small　to　heavy　cracking　was　observed　both　at　the　portal　and　inside　the　tunnels,　while　some　sections　close　to　the　faults　completely　collapsed.　A　summary　of　qualitative　data　collected　from　reports　and　papers　is　presented　regarding　the　behavior　of　the　55　mountain　tunnels　near　the　epicenter　during　the　earthquake.　Based　on　the　seismic　investigation　and　data　collection　of　mountain　tunnels,　the　tunnel　damage　is　classified　into　six　most　common　damage　models　involving　cracking,　spalling,　shear　failure,　dislocation,　pavement　uplift　and　collapse.　Detailed　study　and　discussion　are　then　carried　out　on　the　damage　models.　In　order　to　examine　the　influencing　factors　of　the　damage　magnitude　of　the　mountain　tunnels,　the　correlations　between　epicentral　distance,　earthquake　intensity,　overburden　depth,　geological　condition　and　damage　levels　are　analyzed.　The　relationships　between　earthquake　parameters　and　different　damage　models　are　developed　and　discussed.　Also,　suggestions　are　provided　to　improve　the　seismic　resistance　of　mountain　tunnels.