  Wetting phenomena plays an interesting role in the technological development
of materials. Recently, much attention has been directed to the study of
magnetic solid films. To understand, theoretically, the effect of surface on
wetting and layering transitions in these systems, we will give in this chapter
a presentation of several relevant recent theoretical works realized on wetting
and layering transitions in which we explain how the nature of surface can
affect the behavior of wetting and layering transitions. Using different spin
systems models and different numerical and approximate methods such as mean
field and effective field theories, real space renormalization group technique,
transfer matrix method and Monte-Carlo simulations, it is found that the
wetting and layering transitions depend on the nature of the surface magnetic
field, the surface coupling strength, the surface crystal field, the geometry
of surface, the in-homogeneity of substrate and the quantum fluctuations at the
surface&#65533;
