Abstract: A pronunciation diagnosis device according to the present invention diagnoses the pronunciation of a speaker using articulatory attribute data including articulatory attribute values corresponding to an articulatory attribute of a desirable pronunciation for each phoneme in each audio language system, the articulatory attribute including any one condition of the tongue in the oral cavity, the lips, the vocal cord, the uvula, the nasal cavity, the teeth, and the jaws, or a combination including at least one of the conditions of the articulatory organs; the way of applying force in the conditions of articulatory organs; and a combination of breathing conditions; extracting an acoustic feature from an audio signal generated by a speaker, the acoustic feature being a frequency feature quantity, a sound volume, and a duration time, a rate of change or change pattern thereof, and at least one combination thereof; estimating an attribute value associated with the articulatory attribute on the basis of the extracted