With　the　requirements　of　mobility,　flexibility,　and　rapid　response,　public　safety　Mesh　networks　are　widely　used　for　emergency　services　to　improve　the　efficiency　of　public　safety　communication　to　prevent　or　respond　to　incidents　that　harm　or　endanger　persons　or　property.　This　special　field　communication　brings　new　security　challenges.　In　this　paper,　we　propose　a　key　agreement　scheme　with　voting　receiver　special　for　public　safety　Mesh　networks　based　on　station-to-station　protocol　using　directed　signature　where　only　both　participants　can　gain　the　shared　secret　key,　however,　any　party　else　can　not　understand　the　key　agreement　process　including　signature＇s　verification.　We　analyze　the　properties　of　security　and　efficiency　of　our　key　agreement　scheme　in　comparison　to　station-to-station　protocol　and　authenticated　key　agreement　based　on　asymmetric　encryption.　The　results　of　experiment　show　that　our　key　agreement　scheme　can　provide　resistance　to　unknown　key-share　attacks　and　better　efficiency　in　terms　of　computational　cost.　©　2010　IEEE.