the present invention discloses a method and a device for color correction for solving a problem of low color correction processing speed for images input into a computer in the prior art . a main technical solution includes : an input image is divided into no less than one image blocks ; various color component values of all pixels in each image block are compared with each other , an image block with the same color component values of all pixels being regarded as a simple block , and an image block with different color component values being regarded as a complex block ; and a process of color correction is performed on one pixel of the simple block , then the color correction processing result is copied to other pixels of the simple block . with the technical solution , an object of increasing processing speed can be achieved by performing simplified processing directly toward certain image parts with special features , and the color correction processing speed can be increased without general influence on the present color correction effect .