A display panel and a display method thereof and a display device are disclosed. The display panel comprises: a plurality of first gate lines and data lines which are intersected and insulated with each other; the display panel further comprises a plurality of subpixels; wherein a plurality of subpixels located in the same row are divided into m groups of pixels, each of the groups of pixels comprising n subpixels; the n subpixels in the same group of pixels are respectively connected to n first gate lines one by one, and the n subpixels are connected to the same data line; wherein m>1, n≥2, and m and n are positive integers.