There　are　a　lot　of　measures　to　launch　DoS　attacks　from　the　physical　layer　to　the　application　layer　in　wireless　mesh　networks　because　of　its　own　characteristics.　In　order　to　detect　the　DoS　attack　(Denial-of-Service　attack)　when　wireless　mesh　networks　adopt　AODV　routing　protocol　of　Ad　Hoc　networks,　such　technologies　as　an　end-to-end　authentication,　utilization　rate　of　cache　memory,　two　pre-assumed　threshold　value　and　distributed　voting　are　used　in　this　paper　to　detect　DoS　attackers,　which　is　on　the　basic　of　hierarchical　topology　structure.　Through　performance　analysis　in　theory　and　simulations　experiment,　the　scheme　would　improve　the　flexibility　and　accuracy　of　DoS　attack　detection,　and　would　obviously　improve　its　security　in　wireless　mesh　networks.