Flexible　pressure　sensors　have　drawn　tremendous　attention　in　the　past　decades　due　to　their　widely　advanced　applications　in　electronic　skin,　intelligent　robots　and　wearable　devices.　Most　existing　pressure　sensors　are　developed　based　on　capacitive　sensing　mechanism,　but　the　sensitivity　of　such　sensors　still　need　to　be　improved.　Herein　a　high-sensitivity　pressure　sensor　was　developed　based　on　the　P(VDF-HFP)/[Emim][BF4]　ionogel　film.　The　ionogel　film　has　the　characteristics　of　good　mechanical　flexibility,　good　ionic　conductivity,　high　dielectric　constant　and　uniformed　nanocone　array　structure,　so　the　flexible　pressure　sensor　which　incorporates　it　as　the　dielectric　layer　shows　a　high　sensitivity　(22.38　kPa-1　within　0-3　kPa,　and　15.17　kPa-1　within　3-15　kPa),　fast　response　(0.29　s)　and　relaxation　(0.16　s)　time　and　good　long-term　stability.　The　good　solubility　of　the　P(VDF-HFP)　copolymer　in　acetone　and　the　non-crosslinking　of　the　[Emim]+　and　[BF4]-　within　the　copolymer　network　give　the　ionogel　the　ability　to　be　recycled,　thus　endowing　the　critical　component　of　the　pressure　sensor　with　100%　recyclability　of　structure　and　function.　In　addition,　the　sensor　was　successfully　applied　to　identify　fingertip　force　and　map　the　pressure　distribution　of　different　objects,　demonstrating　that　the　pressure　sensor　can　be　used　as　part　of　wearable　devices　and　human-machine　interfaces　to　sense　pressure.　©　2001-2012　IEEE.