Besides　the　phase　and　group　velocities,　the　amplitude　of　guided　wave　mode　is　also　frequency　dependent.　This　amplitude　dispersion　also　influences　the　performance　of　guided　wave　methods　in　nondestructive　evaluation　(NDE)　and　structural　health　monitoring　(SHM).　In　this　paper,　the　effects　of　amplitude　dispersion　to　the　spectrum　and　waveform　of　a　propagating　wave-packet　are　investigated.　It　is　shown　that　the　amplitude　dispersion　results　in　distortion　in　the　spectrum　of　guided　wave　response,　and　thus　influences　the　waveform　of　the　wave-packet.　To　remove　these　effects,　an　amplitude　dispersion　compensation　method　is　established　on　the　basis　of　Vold-Kalman　filter　and　Taylor　series　expansion.　The　performance　of　that　method　is　then　investigated　by　experimental　examples.　The　results　show　that　with　the　application　of　the　amplitude　dispersion　compensation,　the　time　reversibility　could　be　preserved,　which　ensures　the　applicability　of　the　time　reversal　method　for　damage　detection.　Besides,　through　amplitude　dispersion　compensation,　the　testing　resolution　of　guided　waves　could　be　improved,　so　that　the　structural　features　located　in　the　close　proximity　may　be　separately　identified.