  We have observed the south-east (SE) limb of the Cygnus Loop with {\it
Suzaku}. Our spatially-resolved spectroscopic study shows that a
one-$kT_\mathrm{e}$ non-equilibrium ionization model represents our spectra
fairly well. We find that the metal abundances obtained are all depleted
relative to the solar values with a positional dependency along the radial
direction of the Cygnus Loop. The abundances in the very edge of the limb shows
about half the solar value, whereas other regions inside the Loop show about
0.2 times the solar value which has been believed as a typical value for the
Cygnus Loop limb. The "enhanced" abundance in the very edge in the SE limb is
quite similar to that found in the north-east (NE) limb of the Loop, and thus
this is another evidence of abundance inhomogeneity in the limb regions of the
Loop. The radio map shows a quite different feature: the NE limb is in the
radio bright region while the SE limb shows almost no radio. Therefore, the
metal abundance variation in the SE limb can not attribute to the non-thermal
emission. The abundance inhomogeneity as well as the metal depletion down to
0.2 times the solar value still remain an open question.
