The invention discloses an image processing method which comprises the following steps: the statistics of the numbers of pixels which are respectively corresponding to green (G) and blue (B) component values in all the pixel points of an original image within a preset value interval is carried out; an original image is copied to obtain a temporary image, the numbers of the pixels which are respectively corresponding to G and B component values are compared, if G is more than or equal to B, red (R) component values in each pixel point of the temporary image are all replaced by the G component values on the pixel point; otherwise, the R component values in each pixel point of the temporary image are all replaced by B component values on the pixel point; the temporary image after being treated is overlapped onto the original image according to the brightness mode, and the needed image is finally obtained. The invention simultaneously discloses an image processing device. Through the application of the method and the device of the invention, the red overflow phenomenon in the image can be conveniently and effectively repaired.