Disclosed are a display panel and a display device. The display panel includes a substrate defining a display area, a fan-out area and a source driving chip. A feedback line is arranged in the display area. The source driving chip has a first state and a second state. When the source driving chip is in the first state, a first data signal is input by the source driving chip to the feedback line; when the source driving chip is in the second state, a voltage of the feedback line is fed back to the source driving chip, to allow the source driving chip to output a second data signal to a remaining line of the display area. In each column, a summed number of the first data signal is equal to a summed number of the second dpata signal.