  Based on the GW dispersion relation raised in [1], we investigate the
possible reflection of gravitational wave (GW) by superfluidity (SF) in the
neutron star, provided its high density and dissipationless properties.
Following this scenario, an experimental proposal is raised to probe the
expected SF in neutron star by means of GW detection. Two types of binary
systems are considered, neutron star-black hole and binary neutron star
systems, with weak gravitational field condition imposed. Non-negligible
modulation on the total signal caused by the GW reflection is found, which
contributes amplitude and phase variations distinguishable from the primitive
sine signal. Furthermore, we show that it is possible for such modulations to
be detected by the Cosmic Explorer and Einstein Telescope at $100\,\mbox{Mpc}$.
Identification of those signals can evince the existence of the long-sought SF
in neutron stars as well as the exotic superfluidity-induced GW reflection.
