A sub-pixel arrangement structure of an organic light emitting diode display including a plurality of sub-pixels is provided. The plurality of sub-pixels are arranged in a first direction and a second direction to form a sub-pixel array. The first direction is inclined at a first angle relative to a reference direction, and the second direction is inclined at a second angle relative to the reference direction. Each four sub-pixels of the plurality of sub-pixels form a virtual quadrangle. The each four sub-pixels include two sub-pixels having a same color, and the two sub-pixels having the same color are arranged at adjacent vertexes of the virtual quadrangle in one of the first direction and the second direction.