The present invention relates to a method and apparatus for calculating a residential depression index of the elderly, which generates a plurality of Kinetic House-Tree-Person Test (KHTP) images and a questionnaire for diagnosing residential depression inquiring depression corresponding to each of the KHTP images. step; Providing the depression diagnosis questionnaire to a user terminal, and receiving a user response transmitted by the user terminal in response to the depression questionnaire; Calculating a total of user answers by converting and then depressing depression corresponding to each of the KHTP images included in the user answers in a score method; And calculating and notifying the elderly residential depression index according to the formula "sum of user answers-(age-65) * age weight".
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