The present invention provides a pixel arrangement structure, comprising a plurality of pixel units, and each pixel unit comprising a first sub pixel, a second sub pixel, a third sub pixel and a fourth sub pixel, and the fourth sub pixel being a triangle, and the first sub pixel, the second sub pixel and the third sub pixel being respectively arranged around the fourth sub pixel, and respectively sharing three sides with the fourth sub pixel. The pixel arrangement structure of the present invention adds the white sub pixel to promote the transmission rate of the panel, and to reduce the energy consumption of the display, and meanwhile to be beneficial for implementation of the sub pixel rendering algorithm to promote the virtual resolution.