The invention relates to a display panel and display device. The display panel includes a first substrate, an OLED device, a water vapor transport layer and water absorption layers; the OLED device islocated on the first substrate; the water vapor transport layer covers the OLED device; the water absorption layers are located on the sides, away from the OLED device, of the water vapor transport layer; the water vapor transport layer is used for collecting water vapor and transporting the collected water vapor to the water absorption layers; and the water absorption layers are used for absorbing the water vapor. According to the embodiments, the water vapor entering the OLED device can be reduced, so that the service life of the OLED device can be prolonged.