Unparticles proposed by Georgi carry $CP$ conserving phases in their propagators. We demonstrate that these peculiar phases have an important impact on $CP$ violation. Without including the strong QCD phases, we study the unparticle phase effects on the direct $CP$ asymmetries in the exclusive decays of ${\overline{B}}_d\to {\pi }^{+}{\pi }^{-}$ and $B\to \pi K$, in which the flavor changing neutral currents are forbidden at tree level but induced by one-loop diagrams. Interesting and consistent results comparing to the data are obtained. In addition, we find that unparticles will significantly enhance the differential branching ratio of $b\to s{\ell }^{+}{\ell }^{-}$ at the small invariant mass of ${\ell }^{+}{\ell }^{-}$. The forward-backward asymmetries for $b\to s{\ell }^{+}{\ell }^{-}$ due to unparticles are also explored.

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