  It is widely believed that magnetic reconnection plays an important role in
various eruptive phenomena of space and astrophysical plasmas. The mechanism of
anomalous resistivity, however, has been an open and unsolved problem. The
chaos-induced resistivity proposed by Yoshida (1998) is one of possible
mechanisms for anomalous resistivity. By use of the test particle simulation,
the present work studies the chaos-induced resistivity for different
configurations of reconnection magnetic fields and its distribution in
different chaos regions of reconnection current sheets. The results show that
the chaos-induced resistivity can be 6-7 orders of magnitude higher than the
classical Spitzer resistivity in the X-type chaos regions and 5 orders of
magnitude in the O-type chaos regions. Moreover, in the X-type chaos regions
the chaos-induced resistivity of the magnetized case is higher by a factor of 2
to 3 times than that of the unmagnetized case, but in the O-type chaos regions
the chaos-induced resistivity of the magnetized case is close to or lower than
that of the unmagnetized case. The present work is helpful to the understanding
of the dynamics of reconnection current sheets, especially of the generation
mechanism of the anomalous resistivity of collisionless reconnection regions.
