The present invention provides a display panel and a display method thereof, and a display device. The display panel comprises a plurality of sub-pixel arrays, each sub-pixel array is composed of eight sub-pixels arranged in two rows and four columns. In each sub-pixel array, four sub-pixels in a same row include three color sub-pixels and one compensation sub-pixel, the three color sub-pixels include one red sub-pixel, one green sub-pixel and one blue sub-pixel, colors of two sub-pixels in a same column are different from each other. The display method comprises: causing a plurality of color sub-pixels with the same color near a sub-pixel position to display, so that the required color component is displayed at the sub-pixel position under an average effect of the color sub-pixels with the same color; and performing display compensation on a sub-pixel position by using a plurality of compensation sub-pixels near the sub-pixel position.