  We present optical spectra for new infrared Seyfert galaxies obtained with
the 2.16m telescope at Beijing Astronomical Observatory (BAO). After wavelength
and flux calibration, they are classified by the degree of nuclear activity:
nine Seyfert 2 and three Seyfert 3 galaxies. In addition, by using the data
from de Grijp et al.(1992), we find that (1) there exists a tight correlation
between luminosities of far-infrared ($L_{FIR}$) and \Ha ($L_{H\alpha}$) for
both Seyfert and HII-like (starburst) galaxies; (2) the median value of \Ha
luminosities of Seyfert 1s is one magnitude larger than that of Seyfert 2s and
starburst galaxies; (3) the cumulative distributions of FIR luminosities and
infrared spectral index $\alpha(100,60)$ for Seyfert 1s and 2s are similar to
that of starburst galaxies. We conclude that most of the far-infrared emission
from Seyfert 2 galaxies is due to the violent nuclear/circumnuclear starburst,
rather than the nonthermal activity in the nucleus, this may also be the case
for many Seyfert 1s as well.
