An image processing method is provided. The image processing method includes obtaining a least significant bit (LSB) associated with a pixel block. Further, two bits are reduced from a bit number of each of the pixels of the pixel block. Thereafter whether to carry the pixel or not is determined according to the LSB. When the LSB is 01 or 11, the carry manners of each pixel of the pixel block in two consecutive frames are asymmetric one to another. Further, under the conditions of when the LSB is 01 and 11, respectively, the carry manners of the pixels of the pixel block mutually compensate. Therefore, the display performance of a display is improved.