We suggest that there might be a production of a large number of glueb
alls in relativistic nucleus-nucleus collisions if the quark-gluon pla
sma (QGP) phase is realized. The ratio of the number of the produced g
lueball to that of the neutral pions directly produced in the process
of QGP hadronization is estimated phenomenologically. Being a function
of the phase transition temperature and chemical potential, it can be
as large as a few percents. Considering the fact that the hadronizati
on is very complicated, we anticipate that the abundant population of
glueballs from the quark-gluon plasma at least may exert influences on
the final-state K+/pi(+) ratio.