A color filter array for an image sensing device is disclosed. The color filter array includes a plurality of pixels and a control unit. The plurality of pixels is utilized for generating a plurality of pixel data of an image. The control unit is utilized for controlling the plurality of pixels. In addition, each of the plurality of pixels is divided into a plurality of sub-pixels corresponding to the same color. When outputting the plurality of pixel data, each of the plurality of pixels accumulates pixel value of at least one of the plurality of sub-pixels in each of the plurality of pixels as the pixel data outputted by each of the plurality of pixels.