  We selected 4593 hot subdwarf candidates from the Gaia DR2
Hertzsprung-Russell (HR) diagram. By combining the sample with LAMOST DR5, we
identified 294 hot subdwarf stars, including 169 sdB, 63 sdOB, 31 He-sdOB, 22
sdO, 7 He-sdO and 2 He-sdB stars. The atmospheric parameters (e.g., T_{eff} ,
log g, log(nHe/nH)) are obtained by fitting the hydrogen (H) and helium (He)
line profiles with synthetic spectra. Two distinct He sequences of hot subdwarf
stars are clearly presented in the T_{eff} - log g diagram. We found that the
He-rich sequence consists of the bulk of sdB and sdOB stars as well as all of
the He-sdB, He-sdO and He-sdOB stars in our samples, while all the stars in the
He-weak sequence belong to the sdO spectral type, combined with a few sdB and
sdOB stars. We demonstrated that the combination of Gaia DR2 and LAMOST DR5
allows one to uncover a huge number of new hot subdwarf stars in our Galaxy.
