The invention discloses a digital shooting device and a luminance correcting method thereof. When shooting a digital image, the digital shooting device utilizes flash lamp compensation to perform luminance correction on a shot object in the image. The luminance correcting method comprises the following steps: setting an amplification factor of the digital shooting device for the shot object; acquiring a pre-shot image at least comprising the image of the shot object; shooting the digital image and triggering a flash lamp to emit main flashlight to irradiate the shot object; setting a plurality of photometric areas of the digital image; obtaining corresponding object distances of the shot object in the photometric areas; establishing a shading compensation table according to the object distances; and loading the shading compensation table and adjusting the luminance of the digital image in each photometric area.