  The branchings fractions of the rare $B_s$ decays are calculated in the
framework of the QCD-motivated relativistic quark model. The form factors of
the weak $B_s$ transitions to light mesons are expressed through the overlap
integral of the initial and final meson wave functions in the whole accessible
kinematical range. Explicit determination of the momentum transfer dependence
of the form factors without additional model assumptions and extrapolations
significantly improve the reliability of the obtained results. The approximate
analytical form of the form factors is given in order to simplify the
comparison with other predictions and experiment. The calculated form factors
are applied for the investigations of the rare semileptonic, radiative and
nonleptonic $B_s$ decays. The factorization approximation is used for the
description of the nonleptonic decays. All results agree well with available
experimental data.
