Stress analysis device for moving body

A stress analysis device for moving body, includes: an infrared camera that captures an infrared image of a moving body while making a relative movement with respect to the moving body; and an image processing unit that performs image processing on a plurality of the infrared images captured by the infrared camera. The image processing unit includes: an alignment unit that aligns portions of an object included in the moving body in the plurality of the infrared images including the object, and a stress distribution calculation unit that calculates temperature changes of each of the portions of the object to obtain stress distributions of the portions of the object based on the temperature changes.