  Let $f$ be a $C^2$ diffeomorphism on compact Riemannian manifold $M$ with
partially hyperbolic splitting $$ TM=E^u\oplus E_1^c\oplus\cdots\oplus E_k^c
\oplus E^s, $$ where $E^u$ is uniformly expanding, $E^s$ is uniformly
contracting, and ${\rm dim}E_i^c=1,~ 1\le i \le k, ~k\ge 1$. We prove the
finiteness of ergodic physical(SRB) measures of $f$ under the hyperbolicity of
Gibbs $u$-states.
