A display panel and display device, the display panel includes: a first power terminal disposed on a first side of the display panel; a second power terminal disposed on a second side of the display panel; and a power line configured to transmit mains voltage, wherein the first side and the second side are arranged opposite to each other; and the first power terminal and the second power terminal is in one-to-one correspondence and configured to provide equal mains voltage for the power line. The display panel and display device can compensate the IR drop on a power line in the display panel and hence reduce or eliminate the problem of uneven display brightness of the display panel due to IR drop.