The invention belongs to the technical field of mobile terminals, and provides a high-dynamic-range image acquisition method, a device, a mobile terminal and a computer-readable storage medium, the method comprises: when a moving object exists in a shooting scene, shooting N frames of images on the shooting scene, wherein N is an integer greater than 1; Acquiring a quality evaluation value of eachof the N frames of images, wherein the quality evaluation value indicates a picture quality of the image; If there is an image whose quality evaluation value is higher than a preset threshold value in the N-frame image, obtaining a target image according to the image whose quality evaluation value is higher than the preset threshold value, wherein the target image is a high dynamic range image. With the present application, ghost shadows in high dynamic range images can be avoided, and picture quality of the high dynamic range images can be improved.