  We present a catalog of 3339 hot emission-line stars (ELS) identified from
451,695 O, B, and A type spectra, provided by the LAMOST DR5 release. We
developed an automated python routine that identified 5437 spectra having a
peak between 6561 and 6568~\AA. False detections and bad spectra were removed,
leaving 4138 good emission-line spectra of 3339 unique ELS. We re-estimated the
spectral type of 3307 spectra as the LAMOST Stellar Parameter Pipeline (LASP)
did not provide accurate spectral types for these emission-line spectra. As
Herbig Ae/Be stars show higher excess in near-infrared and mid-infrared
wavelengths than Classical Ae/Be stars, we used 2MASS and WISE photometry to
distinguish them. Finally, we report 1089 Classical Be, 233 Classical Ae, and
56 Herbig Ae/Be stars identified from the LAMOST DR5. In addition, 928
B[em]/A[em] stars and 240 CAe/CBe potential candidates are identified. From our
sample of 3339 hot emission-line stars, 2716 ELS identified in this work do not
have any record in the SIMBAD database and they can be considered as new
detections. Identification of such a large homogeneous set of emission-line
spectra will help the community to study the emission phenomenon in detail
without worrying about the inherent biases when compiling from various sources.
