1. A device for analyzing thermal images, wherein the device comprises: an acquiring unit for acquiring thermal imaging data; an object information selecting unit for selecting object information; one or more object information, data of a reference image, information related to a part, an analysis area corresponding to the information related to a part, an analysis mode associated with the information related to a part, a specified position relation between the reference image and the analysis area, all associated with the object information, being stored in a storage medium; the reference image being associated with at least two information related to a part, each information related to a part being associated with respective analysis area, and respective analysis mode; the information related to a part representing information corresponding to a part of a photographed object; a display controlling unit for controlling to display the reference image in an infrared thermal according to the data of the reference image, the data of the reference image is determined according to the data of the reference image associated with the selected object information; an analysis area setting unit for setting a shape of an analysis area and a position parameter of the analysis area, the analysis area corresponding to information related to a part; a thermal image analyzing unit for analyzing the analysis area corresponding to the information related to a part according to the analysis mode associated with the information related to a part; the analyzing unit comprises a diagnosing unit for analysis according to the specified analysis mode and acquiring the analysis result, the analysis mode comprises a diagnosis rule, and the analysis result comprises a diagnosis result corresponding to the information related to a part; the display controlling unit for displaying the object information, the analysis area and the information related to the information related to a part corresponding to the analysis area, the diagnosis result and the information related to a part corresponding thereto and an infrared thermal image generated by the acquired thermal imaging data together, or displaying the diagnosis result acquired according to the analysis area, the information related to the information related to a part corresponding to the analysis area, and the infrared thermal image generated by the acquired thermal imaging data together; the device for analyzing thermal images is a portable device; different part information corresponds to different shapes of the analysis area, and the analysis mode is arranged according to the different shapes of the analysis area; the position parameter of the analysis area located in the reference image is acquired according to processing for the reference image, and the part information to which different processing rules correspond is prepared in advance; a specified part is a base point, and the analysis area is configured by using the base point as a center of the shape thereof.