Vehicle surroundings monitoring device and vehicle surroundings monitoring system

The invention relates to a vehicle periphery monitoring device and a vehicle periphery monitoring system. A vehicle surroundings monitoring device includes: an image acquisition unit that acquires an image of a vehicle surroundings captured by an imaging device; a first image correction unit that corrects the acquired image in accordance with the environment around the vehicle; a second image correction unit that performs correction for determining whether or not dirt has been captured in the acquired image; a display switching unit that switches between a display mode in which the first corrected image corrected by the first image correction unit is displayed on a display unit in a vehicle cabin, and a non-display mode in which the first corrected image is not displayed on the display unit; an image recording unit that records the first corrected image; and a dirt detection section that corrects the image by the second image correction section at a predetermined timing in the non-display mode, and detects di