  We generalize the field theory of global monopole to Dirac-Born-Infeld(DBI)
field and investigate the gravitational property of a DBI global monopole in
four-dimensional spherically symmetric spacetime. The coupled equations for the
metric and the DBI scalar field are solved asymptotically and numerically. It
is found that, just as a canonical global monopole, the gravitational effect of
DBI global monopole is equivalent to that of a deficit solid angle in the
metric plus a negative mass at the origin. However, compared with a canonical
global monopole, for the same false vacuum and symmetry breaking scale, a DBI
global monopole has a relatively smaller core and a larger absolute value of
effective mass. Thus, it can give out a larger deflect angle when the light
passing by. Especially, when the scale of warp factor is small enough, the
effective mass of a DBI global monopole does not depend apparently on the value
of the false vacuum, which is qualitatively different from that of a canonical
global monopole.
