The utility model relates to a demonstration field discloses a display panel and display device for the emergence of the display frame contrast decline phenomenon that the reflection of light of black matrix layer caused reduces owing to promoting the display effect. Display panel wherein includes: relative first base plate and the second base plate that sets up a plurality of pixel that are array arrangement between first base plate and second base plate, sets up in pixel's non - open area's black matrix layer, still includes: diffuse reflection layer, the diffuse reflection layer orthographic projection pattern on first base plate coincides with the orthographic projection pattern of black matrix layer on first base plate each other, and the display surface of the relative black matrix layer in diffuse reflection layer near display panel.