This application discloses an image bloom processing method and apparatus, and a storage medium, and relates to the field of image processing technologies. An electronic device obtains a first brightness region class in a first image, where the first brightness region class includes one or more brightness regions in the first image; after determining that the first brightness region class in the first image is the same as a target brightness region class in a second image on which bloom processing is performed, the electronic device obtains a first intermediate image obtained after Gaussian blur processing is performed on the target brightness region class in the second image; and the electronic device generates a bloom image of the first image based on the first image and the first intermediate image.