  We investigate the neutralino dark matter in the focus point gaugino
mediation model with the O(100) GeV gravitino. The thermal relic abundance of
the neutralino with a sizable Higgsino fraction can explain the dark matter
density at the present universe. The spin-independent cross section is
marginally consistent with the current upper limit from the XENON 100
experiment, and the whole parameter region can be covered at the XENON1T
experiment. We also discuss the origin of the gluino mass to wino mass ratio at
around 3/8, which is crucial for the mild fine-tuning in the electroweak
symmetry breaking sector. It is shown that the existence of the non-anomalous
discrete R-symmetry can fix this ratio to 3/8.
