A method for identifying a display current includes: acquiring grayscales of pixels in a to-be-displayed image, where the grayscale of each pixel includes grayscales of a plurality of color channels; calculating an average grayscale of a same color channel of all pixels in the to-be-displayed image; identifying a current value of each color channel and a current offset value of each color channel according to the average grayscale of each color channel, where the current offset value represents a difference between a display current value of a nonmonochromatic image and a display current sum of monochromatic images corresponding to the nonmonochromatic image; and calculating a display current of the to-be-displayed image based on the current value and the current offset value of each color channel.