Vibration　sensing　networks,　which　consist　of　numerous　sensors,　require　high　demodulation　speeds.　Therefore,　optimizing　the　demodulation　algorithm　to　reduce　data　processing　volume　or　complexity　is　crucial　for　enhancing　efficiency　and　performance.　This　article　proposes　a　vibration　sensing　demodulation　method　based　on　the　light　intensity　difference　(LID)　of　charge-coupled　device　(CCD)　pixel　points.　The　method　requires　calculating　the　center　wavelength　of　all　CCD　pixel　points　only　once.　It　then　selects　pairs　of　pixel　points　with　opposite　phases　in　the　reflection　spectrum　to　perform　differential　operations,　significantly　reducing　data　processing　volume　and　computational　complexity　and　thereby　improving　demodulation　speed.　In　addition,　by　increasing　the　number　of　calculation　pairs,　the　method　enhances　demodulation　resolution,　suppresses　noise,　and　improves　robustness.　The　method　is　modeled　through　simulation　and　theoretical　analysis,　with　results　indicating　reduced　background　noise　influence.　Tested　with　fiber　Bragg　grating　(FBG)　vibration　sensors,　the　method　achieves　a　resolution　of　62μg　and　a　demodulation　rate　of　16　kHz,　highlighting　its　promising　application　prospects　in　high-speed　and　large-capacity　vibration　sensing.　©　2024　IEEE.