A controller for a four-wheel drive vehicle provided with a transfer device and a multi-information display disposed in the interior of said vehicle, the transfer device comprising a lock mechanism intended to lock a center differential and a switch mechanism intended to switch between a two-wheel drive state and a four-wheel drive state and being intended to distribute an output from an engine to front and rear shafts (16, 18) of the vehicle, the controller comprising: a first operation part operable by a passenger to switch drive modes of the vehicle; a second operation part operable by a passenger to switch off-road traveling modes indicating traveling modes for off-road driving of the vehicle; and a transfer controller intended to control an arrangement of the transfer device in response to the drive mode selected by the first operation part; the controller further comprising: a detector intended to detect the arrangement of the transfer device; a setter intended to set one of the traveling modes of the vehicle based on the arrangement detected by the detector and input operations to the first operation part and the second operation part; and a display controller intended to instruct the multi-information display to display the drive mode based on the input operation to the first operation part and the arrangement detected by the detector and to display the traveling mode set by the setter, wherein the drive modes include a locked drive mode for a four-wheel drive state in which the center differential is locked by the lock mechanism, the display controller is intended to instruct the multi-information display to display a single window having a first area for the drive mode and a second area for the traveling mode, and the display controller is intended to instruct the multi-information display to display the drive mode and the traveling mode on the window when the drive mode switched by the first operation part is the locked drive mode, and to simultaneously turn off the displays of the drive mode and the traveling mode after a predetermined time. a first operation part operable by a passenger to switch drive modes of the vehicle; a second operation part operable by a passenger to switch off-road traveling modes indicating traveling modes for off-road driving of the vehicle; and a transfer controller intended to control an arrangement of the transfer device in response to the drive mode selected by the first operation part; the controller further comprising: a detector intended to detect the arrangement of the transfer device; a setter intended to set one of the traveling modes of the vehicle based on the arrangement detected by the detector and input operations to the first operation part and the second operation part; and a display controller intended to instruct the multi-information display to display the drive mode based on the input operation to the first operation part and the arrangement detected by the detector and to display the traveling mode set by the setter, wherein a detector intended to detect the arrangement of the transfer device; a setter intended to set one of the traveling modes of the vehicle based on the arrangement detected by the detector and input operations to the first operation part and the second operation part; and a display controller intended to instruct the multi-information display to display the drive mode based on the input operation to the first operation part and the arrangement detected by the detector and to display the traveling mode set by the setter, wherein the drive modes include a locked drive mode for a four-wheel drive state in which the center differential is locked by the lock mechanism, the display controller is intended to instruct the multi-information display to display a single window having a first area for the drive mode and a second area for the traveling mode, and the display controller is intended to instruct the multi-information display to display the drive mode and the traveling mode on the window when the drive mode switched by the first operation part is the locked drive mode, and to simultaneously turn off the displays of the drive mode and the traveling mode after a predetermined time.