  We examine the present and future XENON limits on the neutralino dark matter
in split supersymmetry (split-SUSY). Through a scan over the parameter space
under the current constraints from collider experiments and the WMAP
measurement of the dark matter relic density, we find that in the allowed
parameter space a large part has been excluded by the present XENON100 limits
and a further largish part can be covered by the future exposure (6000 kg-day).
In case of unobservation of dark matter with such an exposure in the future,
the lightest neutralino will remain bino-like and its annihilation is mainly
through exchanging the SM-like Higgs boson in order to get the required relic
density.
