The present disclosure provides a pixel array, a display device and a display method thereof. The pixel array includes first display blocks and second display blocks arranged in an array. The first display blocks and the second display blocks are arranged by turns in a first direction. Each display block includes a first subpixel, a second subpixel, a third subpixel, a fourth subpixel and a fifth subpixel arranged in two adjacent lines, the first subpixel, the second subpixel and the third subpixel are arranged in a line, and the fourth subpixel and the fifth subpixel are arranged in a line. A gap between any two adjacent subpixels in an ith line is aligned in an extension direction of the gap with a subpixel in an (i+1)th line.