For　rapidly　responding　to　civil　aviation　emergency　incidents,　effective　and　secure　emergency　communication　becomes　particularly　important　for　better　decision　making　whether　to　save　lives　or　to　preserve　property.　In　this　paper,　we　propose　a　mesh　network＇s　architecture　for　civil　aviation　emergency　communication,　an　enhanced　elliptic　curve　signcryption　scheme　named　EECS,　and　an　EECS　based　user　admission　scheme　named　EECSUA　adaptive　to　civil　aviation　emergency　mesh　networks.　The　results　of　security　and　efficiency　analysis　show　that　the　EECSUA　effectively　protects　the　properties　of　peer-to-peer＇s　confidentiality,　authenticity,　privacy　and　behavior　tracing　between　an　emergency　responding　individual　and　an　emergency　command　center　in　comparison　to　Zheng＇s　elliptic　curve　signcryption　based　one　and　saves　the　cost　of　computation　and　communication　in　comparison　to　a　user　admission　scheme　based　on　traditional　elliptic　curve　cryptography.