A medical image processing device includes a port, a processor and a display. The port acquires a plurality of image data from a living body. The processor classifies the plurality of image dam to genes ate a plurality of image groups based OH a first time component. The first time component is defined by a first time interval among imaging times at which the plurality of image data are generated. The processor correlates each image data in one image groups with each image data in another image group, based on both an actual time and a time ratio of a second time component. The second time component is defined by a second time interval among the imaging times being shorter than the first time interval. The display displays images based on the plurality of image data based on the correlation of the image data in the image groups.
