  We construct a new catalog of the blue horizontal-branch (BHB) stars from the
Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) DR5 dataset,
which contains 5355+81 BHB stars at high Galactic latitude
(($|Glat|>20^{\circ}$). We combine the spectral line indices with a set of
Balmer line profile selection criteria to identify the BHB stars. During the
selection process, we use the line index of \ion{Ca}{2}\,K to exclude the
metal-rich A-type dwarfs. We obtain their atmospheric parameters by
cross-matching our BHB stars with the catalog provided by \citet{Xiang2022}.
The results show that our sample is consistent with the theoretical $T_{\rm
eff}$-log\,$g$ evolutionary tracks of the BHB stars, indicating that our method
is robust for identifying BHB stars from the LAMOST spectra. Their spatial
distribution indicates that most of our BHB stars are located in the inner halo
or the disk of the Milky Way. Combined with other BHB samples from the
literature, the BHB stars can cover a large Galactic volume, which makes it a
better probe for studying the kinematics, dynamics, and structural
characteristics of the Milky Way.
