DRIVING ASSIST METHOD AND DRIVING ASSIST DEVICE

To provide a driving assist method that can reduce the possibility of missing an opportunity to correct a host vehicle position set on map data. The method comprising: setting (S7) a target inter-vehicular distance to a preceding vehicle to a preset first target inter-vehicular distance upon determining an execution request for executing a correction of a host vehicle position set on map data has not been made; and determining (S2), after determining that the execution request has been made, whether a correction-not-possible period, in which the correction cannot be executed, has continued for at least a preset threshold period, and upon determining that the correction-not-possible period has continued for at least the threshold period, setting (S8) the target inter-vehicular distance to a second target inter-vehicular distance, which is longer than the first target inter-vehicular distance, upon determining the execution request has been made.