The　crystal　structure　and　electronic　sturcture　of　the　Wurtzite　type　ZnO　at　different　exoteric　pressures　have　been　investigated　based　on　the　density　functional　theory　calculations　of　the　plane　wave.　The　results　show　that　the　lattice　parameters　of　ZnO　and　ZnO　bond　length　are　increased　firstly　and　then　decreased　with　the　increase　of　the　external　pressure,　the　ratio　of　vertical　and　horizontal　axis　increases,　while　the　symmety　of　the　structure　remain　unchanged.　The　band　gaps　are　all　direct　gap,　the　gap　width　decreases　firstly　and　then　increases　along　with　increasing　the　exoteric　pressure.　The　band　gap　is　0.908　eV　for　the　un-pressed　ZnO　and　the　band　gap　of　the　ZnO　at　100　GPa　is　increased　to　0.993　eV.　The　density　of　states　near　Fermi　level　can　be　increased　by　increasing　the　exoteric　pressure　and　the　localization　of　the　electrons　can　be　enhanced.　The　analyzing　results　has　shown　that　the　effective　mass　of　the　carriers　under　the　Fermi　level　can　be　enhanced　firstly　and　then　depressed　by　increasing　the　exoteric　pressure,　the　effective　mass　of　the　carriers　above　the　Fermi　level　is　slightly　light.　The　distribution　of　the　electrons　at　different　orbitals　can　be　modulated　by　altering　the　exoteric　pressure.