  The strong coupling constants are basic quantities that carry information of
the strong interactions among the baryon and meson multiplets as well as
information on the natures and internal structures of the involved hadrons.
These parameters enter to the transition matrix elements of various decays as
main inputs and they play key roles in analyses of the experimental data
including various hadrons. We determine the strong coupling constants among the
doubly heavy spin-$ 3/2 $ baryons, $\Xi^*_{QQ'} $ and $\Omega^*_{QQ'}$, and
light pseudoscalar mesons, $\pi$, $K$ and $\eta$, using the light-cone QCD. The
values obtained for the strong coupling constants under study may be used in
construction of the strong potentials among the doubly heavy spin-3/2 baryons
and light pseudoscalar mesons.
