  FS CMa type stars is a group of ~70 objects formerly known as unclassified
stars with the B[e] phenomenon. Their very strong emission-line spectra in
combination with a nearly main-sequence luminosity suggest the binary nature
for them. They possess strong IR excesses due to radiation of circumstellar
dust that implies a compact distribution probably in a circumbinary disk. Our
long-term spectroscopic monitoring revealed neutral metal lines, which always
include that of Li I 6708 \AA, in the spectra of some FS CMa objects indicating
the presence of a cool star. We present a summary of our results with a first
overview of FS CMa type binaries and review possible implications for the
nature and evolutionary status of the entire group.
