The LAMOST DR5 V2 A, F, G and K type star catalog lists spectral parameters of 5,348,713 stars, including 85,845 A type stars, 1,694,183 F type stars, 2,739,467 G type stars and 829,218 K type stars. These objects are selected with the criterion of SNR in g band larger than 6 in dark nights, and SNR in g band larger than 15 in bright nights.