The invention provides a reclosure method and a reclosure device. The reclosure method includes steps: determining whether a fault line has an instantaneous fault after tripping of a circuit breaker,performing a reclosure operation if yes, and not performing the reclosure operation if not. According to the reclosure method, whether the fault line has the instantaneous fault is determined, the closure operation is not performed for non-instantaneous fault (permanent fault), blind reclosure after tripping of the circuit breaker is avoided, and the reclosure device has the same effect.