The invention provides a method and a device for converting an image to a music melody, and a computer readable storage medium. The method comprises the steps of acquiring an HSB value of each pixel point in the target image, and performing color clustering processing on each pixel point of the target image according to the HSB value, thereby obtaining a color clustering image corresponding to thetarget image; performing normalization processing on each color block in the color clustering image to obtain a pronunciation point image corresponding to the target image; mapping the pronunciationpoint image into a pre-established grid, and establishing a mapping relation between each pronunciation point in the pronunciation point image and each musical scale in the grid; and according to themapping relation, extracting the musical scales corresponding to the pronunciation points in the pronunciation point image in a set direction of the grid, thereby generating the melody corresponding to the target image. Through the method, the target image can be converted into the specific music melody, so that the duration and cost of making the music melody are greatly shortened and reduced, and the customization requirements of people on the music melody are met.