  The widths of a glueball decay to two pions or kaons are analyzed in the pQCD
framework. Our results show that the glueball ground state has small branching
ratio for two-meson decay mode, which is around $10^{-2}$. The predicted values
are consistent with the data of $\xi\to\pi\pi, KK$ if $\xi$ particle is a
$2^{++}$ glueball. Applicability of pQCD to the glueball decay and comparison
with $\chi_{cJ}$ decay are also discussed.
