NFC　is　a　new　development　of　Radio-Frequency　Identification　technique.　In　recent　years,　it　got　extremely　fast　popularization　due　to　its　portability　and　practicability.　At　the　same　time,　however,　criminals　also　began　to　seek　the　new　information　technology＇s　security　leak.　For　avoiding　the　secure　attacks,　people　should　know　the　mechanism　of　threats　and　embark　on　protection　work　based　on　the　fundamentality.　This　paper　presents　some　common　threats　occurring　in　NFC　transmission　processes,　including　eavesdropping,　transmission　interference　and　data　distortion.　According　to　the　commonality　of　each　information　theories,　it　is　a　tricky　way　to　use　the　relevant　techniques　and　applications　that　were　already　promoted　to　solve　the　NFC　information　security　problems.　Hence,　I　proposed　to　use　the　encryption　technique　to　solve　illegal　access　private　information.　And　then　this　paper　also　discusses　the　feasibility　of　applying　the　Quality-of-service-based　transmit　beamforming　and　the　Faraday　Cage　on　defending　signal　disturbance.　Following　discussion,　it　was　proved　that,　based　on　the　mechanisms　of　the　different　transmission　stages,　those　methods　could　perform　different　roles　to　solve　specific　problems.