  The magnetic moments of the recently observed resonance $X_b(5568)$ by DO
Collaboration and its partner with charm quark are calculated in the framework
of the light cone QCD sum rules, by assuming that these resonances are
represented as tetra--quark states with quantum numbers $J^{PC}=1^{+\pm}$. The
magnetic moment can play critical role in determination of the quantum numbers,
as well as giving useful information about the inner structure of these mesons.
