This　paper　evaluates　the　influence　of　the　geometry　design　on　the　sensitivity　of　SAW　(surface　acoustic　wave)　pressure　sensors.　The　SAW　propagation　characteristics　on　the　pressurized　ST-x　quartz　diaphragm　are　simulated　through　the　finite　element　analysis.　The　pressure　sensitivities　for　different　sensor　configurations　are　obtained　by　studying　the　resonance　frequency　over　a　wide　range　of　the　operating　pressure.　It　is　found　that　the　estimated　sensitivity　is　almost　linear　with　the　frequency　and　accordingly　the　pressure　sensitivity　can　be　improved　effectively　by　increasing　the　resonance　frequency　of　the　SAW　resonators.　Meanwhile,　the　simulation　results　show　that　a　higher　sensitivity　can　be　achieved　by　the　proper　design　of　the　number　of　IDT　fingers,　and　the　selection　of　the　resonator　location.