A variable resistance element is configured to be provided with a
perovskite-type oxide between a first electrode and a second electrode,
of which electric resistance between the first electrode and the second
electrode is changed by applying a voltage pulse of a predetermined
polarity between the first electrode and the second electrode, and the
variable resistance element has a resistance hysteresis characteristic,
in which a changing rate of a resistance value is changed from positive
to negative with respect to increase of a cumulative pulse applying time
in the application of the voltage pulse. The voltage pulse is applied to
the variable resistance element so that the cumulative pulse applying
time is not longer than a specific cumulative pulse applying time, in
which the changing rate of the, resistance value is changed from positive
to negative with respect to increase of the cumulative pulse applying
time in the resistance hysteresis characteristic.