  A chiral field theory of $0^{-+}$ glueball is presented. The coupling between
the quark operator and the $0^{-+}$ glueball field is revealed from the U(1)
anomaly. The Lagrangian of this theory is constructed by adding a $0^{-+}$
glueball field to a successful Lagrangian of chiral field theory of
pseudoscalar, vector, and axial-vector mesons. Quantitative study of the
physical processes of the $0^{-+}$ glueball of $m=1.405\textrm{GeV}$ is
presented. The theoretical predictions can be used to identify the $0^{-+}$
glueball.
