  The phase transition of chiral symmetry restoration in strange hadronic
matter is studied in the chiral SU(3) quark mean field model. When the baryon
density is larger than a critical density $\rho_c$, the minimal energy density
of the system occurs at the point where the effective masses of nucleon,
$\Lambda$ or $\Xi$ drop to zero. The physical quantities change discontinuously
at this density and the system will be in the phase of chiral symmetry
restoration. A rich phase structure of strange hadronic matter with different
strangeness fraction $f_s$ is obtained.
