We review chemical evolution models developed for M31 as well as the abundance determinations available for this galaxy .
Then we present a recent chemical evolution model for M31 including radial gas flows and galactic fountains along the disk , as well as a model for the bulge .
Our models are predicting the evolution of the abundances of several chemical species such as H , He , C , N , O , Ne , Mg , Si , S , Ca and Fe .
From comparison between model predictions and observations we can derive some constraints on the evolution of the disk and the bulge of M31 .
We reach the conclusions that Andromeda must have evolved faster than the Milky Way and inside-out , and that its bulge formed much faster than the disk on a timescale \leq 0.5 Gyr .
Finally , we present a study where we apply the model developed for the disk of M31 in order to study the probability of finding galactic habitable zones in this galaxy .