  The period-luminosity (P-L) relation for Cepheid variables is important in
modern astrophysics. In this work, we present the multi-band P-L relations
derived from the Large Magellanic Cloud (LMC) and Small Magellanic Cloud (SMC)
Cepheids, based on the latest release of OGLE-III catalogs. In addition to the
V I band mean magnitudes adopted from OGLE-III catalogs, we also cross-matched
the LMC and SMC Cepheids to the 2MASS point source catalogs and publicly
available Spitzer catalogs from SAGE program. Mean magnitudes for these
Cepheids were corrected for extinction using available extinction maps. When
comparing the P-L slopes, we found that the P-L slopes in these two galaxies
are consistent with each others within ~2.5sigma level.
