A skin state estimation device (10, 110) is provided with: a skin temperature acquisition means (20) and/or an image data acquisition means (120) a skin state estimation means (30, 130) and a state visualization means (200). The skin temperature acquisition means (20) acquires skin temperature data in chronological order. The image data acquisition means (120) acquires, in chronological order, captured image data of skin in a location to be examined. The skin state estimation means (30, 130) estimates the state of the skin in the location to be examined on the basis of a plurality of components obtained by using singular value decomposition, principal component analysis, or independent component analysis to decompose the skin temperature data and/or skin circulation amount data. The state visualization means (200) determines whether the location to be examined is normal on the basis of skin state activity estimated by the skin state determination means (30, 130).
