  We report the first systematic study to identify and characterize a sample of
classical Ae stars in the Galaxy. The spectra of these stars were retrieved
from the A-star catalog using the Large sky Area Multi-Object fiber
Spectroscopic Telescope (LAMOST) survey. We identified the emission-line stars
in this catalog from which 159 are confirmed as classical Ae stars. This
increases the sample of known classical Ae stars by about nine times from the
previously identified 21 stars. The evolutionary phase of classical Ae stars in
this study is confirmed from the relatively small mid- and far-infrared excess
and from their location in the optical color-magnitude diagram. We estimated
the spectral type using MILES spectral templates and identified Classical Ae
stars beyond A3, for the first time. The prominent emission lines in the
spectra within the wavelength range 3700 -- 9000 {\AA} are identified and
compared with the features present in classical Be stars. The H{\alpha}
emission strength of the stars in our sample show a steady decrease from late-B
type to Ae stars, suggesting that the disc size may be dependent on the
spectral type. Interestingly, we noticed emission lines of Fe{\sc ii}, O{\sc i}
and Paschen series in the spectrum of some classical Ae stars. These lines are
supposed to fade out by late B-type and should not be present in Ae stars.
Further studies, including spectra with better resolution, is needed to
correlate these results with the rotation rates of classical Ae stars.
