Studies of rare B meson decays with the CMS detector

Rare beauty decays are usually an excellent probe to the physics beyond the standard model. Especially those decays, that are proceed through flavor-changing neutral currents, can have the interference from new physics with the loop diagrams. Some of these decays are well predicted by the theory, such as $B_{s,d} \to \mu^+\mu^-$ branching fractions and the $A_\mathrm{FB}$ of the $B\to K^{*}\mu^+\mu^-$, are the gold plate searches at the colliders. In this talk these searches in pp collisions at LHC using the data collected bythe CMS detector are presented.