The present invention provides an attribute estimation system capable of acquiring an image of a person whose attributes are to be estimated accurately and informing the person of an attribute estimation result. The attribute estimation system (1) includes: a mirror (11) equipped with an information display terminal (12); and an attribute estimation device (3). The information display terminal (12) includes an image acquisition unit. The information display terminal (12) is disposed on the mirror (11) in such a manner that the information display terminal (12) can display information on a surface of the mirror (11) and that the image acquisition unit can acquire an image of a user of the mirror (11). The information display terminal (12) and the attribute estimation device (3) can be connected to each other via a communication line network (2). The attribute estimation device (3) generates attribute information estimated from the acquired image of the user of the mirror (11). The information display terminal (12) displays the generated attribute information on the surface of the mirror (11).