  A new Chemo -- Dynamical Smoothed Particle Hydrodynamic (CD -- SPH) code is
presented. The disk galaxy is described as a multi -- fragmented gas and star
system, embedded into the cold dark matter halo. The star formation (SF)
process, SNII, SNIa and PN events as well as chemical enrichment of gas have
been considered within the framework of standard SPH model. Using this model we
try to describe the dynamical and chemical evolution of triaxial disk -- like
galaxies. It is found that such approach provides a realistic description of
the process of formation, chemical and dynamical evolution of disk galaxies
over the cosmological timescale.
