  Chemical evolution models (CEM) are important tools to understand the
formation and evolution of the components of the Milky Way Galaxy and other
galaxies in the universe. The Galactic bulge is the only galaxy bulge that can
be resolved and can be studied with exquisite details. In this way, the bulge
metallicity distribution function (MDF) can be traced for different regions
within the bulge and can give us clues about the bulge formation scenario. In
this work we have assumed an inside-out formation for the Galactic bulge and
using a CEM we were able to compute the chemical evolution in nine different
radial regions, from 0 to 2 kpc, in steps of 0.25 kpc . The preliminary results
show that in the inner regions of the bulge the MDF is skewed to higher
metallicities, while at the outer regions there is a metal rich component but
also a metal poor component much more extended than in the inner regions. These
results may explain the metallicity gradient observed in the Galactic bulge.
