The invention relates to a display panel and a display device. The display panel comprises a first substrate, a second substrate and a liquid crystal layer. A plurality of pixel units are formed on the second substrate and include a plurality of first pixel units and a plurality of second pixel units, wherein the first pixel units and the second pixel units are arranged alternately. In addition, the display panel also includes an optical direction layer arranged at one side, away from the liquid crystal layer, of the first substrate; the optical direction layer includes a plurality of first reflective surfaces and a plurality of second reflective surfaces; the first reflective surfaces are used for reflecting light emitted by the first pixel units towards a first direction and the second reflective surfaces are used for reflecting light emitted by the second pixel units towards a second direction. Besides, the display device includes the display panel. According to the display panel and the display device provided by the invention, light emitted by the first substrate can be transmitted to a left view field and a right view field that are independent of each other by the optical direction layer, thereby realizing simultaneously displaying of different images by one same display panel and thus saving the cost.