  The Kaluza-Klein (KK) modes of graviton are studied in the IIB superstring
compactification where the warped geometry is realized at the
Klebanov-Strassler (KS) throat. Knowledge of the metric of the KS throat
enables us to determine their wave functions with good accuracy, without any
further specification of the rest of Calabi-Yau space, owing to the
localization of the KK modes. Mass spectrum and couplings to the four
dimensional fields are computed for some type of the KK modes, and compared to
those of the well-known Randall-Sundrum model. We find that the properties of
the KK modes of the two models are very different in both the masses and the
couplings, and thus they are distinguishable from each other experimentally.
