The present invention provides a display panel and a display method thereof, and a display device. The display panel comprises a plurality of circulation units, each circulation unit is composed of two rows of sub-pixels, the sub-pixels in each row include one red sub-pixel, one green sub-pixel and one blue sub-pixel, and the sub-pixels in a first row are provided to shift by a half size of the sub-pixel in a row direction with respect to the sub-pixels in a second row, respectively, and an arrangement mode of the sub-pixels in the first row is different from that of the sub-pixels in the second row. The display method comprises: determining initial components of the sub-pixels according to a picture to be displayed; and determining a display component of a sub-pixel according to the initial components of the sub-pixel and common sub-pixels of the sub-pixel.