A medical image processing device includes an image acquisition unit that acquires an endoscopic image, an bounding box acquisition unit that acquires a bounding box which corresponds to an object to be detected shown in the endoscopic image and in which at least a part of the object to be detected is included, an adjustment unit that changes the position of the bounding box and reduces the area of the bounding box on the basis of the endoscopic image, and a storage controller that associates a new adjusted bounding box with the endoscopic image and stores the new adjusted bounding box and the endoscopic image.