  We describe the anisotropy of dark matter clump distribution caused by tidal
destruction of clumps in the Galactic disk. A tidal destruction of clumps with
orbit planes near the disk plane occurs more efficiently as compared with
destruction of clumps at near-polar orbits. A corresponding annihilation of
dark matter particles in small-scale clumps produces the anisotropic gamma-ray
signal with respect to the Galactic disk. This anisotropy is rather small, 9%,
and superimposed on that due to off-centering position of the Sun in the
Galaxy. The anisotropy of annihilation signal with respect to the Galactic disk
provides a possibility to discriminate dark matter annihilation from the
diffuse gamma-ray backgrounds of other origin.
