A display data processing method of a display device, a display device, an electronic device, and a storage medium are disclosed. The display data processing method includes: in response to a case where a frequency of the dimming screen is consistent with a frequency of the display screen: determining a first gray-scale value of the first dimming pixel according to a plurality of input gray-scale values, which are in one-to-one correspondence with the plurality of first display pixels, in an input image; determining a second gray-scale value of the first dimming pixel according to the first gray-scale value of the first dimming pixel and a noise reduction function, where the noise reduction function is a monotonically increasing function in an interval (0, 1), and has an intersection point P(x0, y0) with a function y=x in a case where x is in the interval (0, 1), and in a case where x is in an interval (0, x0), a function value of the noise reduction function is less than a function value y of the function y=x; obtaining a dimming gray-scale value of the first dimming pixel based on the second gray-scale value of the first dimming pixel; and determining a plurality of target gray-scale values corresponding to the plurality of first display pixels according to the plurality of input gray-scale values and the dimming gray-scale value of the first dimming pixel.