A display panel and a display device are provided. The display panel includes: a display region and a non-display region at least partially surrounding the display region; a first base plate and a second base plate opposite to each other; and first reflection structures in the non-display region. The first base plate includes a first substrate. The second base plate includes a light-blocking layer. In the non-display region, the light-blocking layer includes at least one first opening. Along a first direction, the at least one first opening penetrates through the light-blocking layer. The first direction is a thickness direction of the display panel. Along the first direction, a projection of a first reflection structure overlaps a projection of a corresponding first opening of the at least one first opening.