The purpose of the present invention is to provide a damage information processing device and a damage information processing method, whereby the connection between damage vectors can be easily grasped. This damage information processing device comprises: a damage information acquisition unit that obtains damage information about damage to a structure; a damage vector generation unit that vectorizes the obtained damage information and generates a damage vector; and a hierarchical structure information generation unit that generates hierarchical structure information being information providing a hierarchical expression of the connection between damage vectors on the basis of the generated damage vectors. As a result of generating hierarchical structure information being information providing a hierarchical expression of the connection between damage vectors, the connection between damage vectors can be easily grasped and damage vectors can be easily analyzed and/or searched by using the hierarchical structure
