The invention discloses a human body scanning image processing method and device and a computer readable storage medium, and the method comprises the steps: obtaining a human body scanning image, andcarrying out the segmentation of the human body scanning image, so as to obtain a current human body segmented image; Judging whether the definition meets a first preset condition or not; If yes, continuously segmenting the image, and carrying out definition optimization on the image; If not, judging whether the size meets a second preset condition or not; If yes, continuing to segment to obtain anext layer of human body segmented image, and returning to the step of judging whether the definition meets a first preset condition or not; If not, performing definition optimization on all the human body segmented images obtained by the last layer of segmentation; And generating a final human body scanning image according to all the human body segmented images subjected to definition optimization. Through the above implementation mode, optimization processing can be carried out on some different areas with fuzzy imaging in the human body scanning image.