The invention discloses an image processing method. The image processing method comprises the steps that a to-be-processed image is processed to subtract a pixel value of each pixel of the to-be-processed image by a predetermined proportion of black level to obtain an initial black-removed image; the initial black-removed image is denoised to obtain a denoised image; and the denoised image is processed to subtract a pixel value of each pixel of the denoised image by the remaining proportion of black level to obtain a black-removed image, wherein the sum of the remaining proportion and the predetermined proportion is 1, and the remaining proportion is larger than the predetermined proportion. The invention further discloses an image processing device, a computer readable storage medium andcomputer equipment. According to the image processing method and device, the computer readable storage medium and the computer equipment, the condition that the effect of the dark of the image is poorin denoising processing due to the fact that the signal is weak and the condition that various follow-up image processing effects become poor due to existence of the black level can be avoided, and therefore the image processing effect can be integrally improved.