Study of the $B_{s}^{0} \to J/\psi\phi \mu^{+}\mu^{-} K^{+}K^{-}$ channel with CMS

The prospects of study of the Bs->J/psi Phi->mu+ mu- K+ K- decay channel with CMS detector at LHC are presented. An emphasis is given to the strategies of the High Level Trigger and offline selection of signal events. Selection efficiencies and signal event yields are estimated.