A position adjustment of the camera body 2 to a reference position can be performed by the position adjustment mechanism 4 with reference to a position relation between the mark 5 provided in the bottom portion 2a of the camera body 2 and the slit 6 formed in the bottom portion 3a of the bracket 3. Therefore, it is not required that the vehicular image pickup device is connected to the monitor to perform the position adjustment by confirming the pickup image of each one, thus allowing reduction of hours and labors required for reference position adjustment of the camera body 2. Further, since the vehicular image pickup device can be shipped in a state where the camera body 2 is still adjusted to the reference position, hours and labors required for the reference position adjustment of the camera body 2 after the image pickup device is mounted to the vehicle can be reduced.