The invention provides a depression monitoring device for depressive disorder of the
elderly people. The depression monitoring device at least comprises a mobile terminal, a
detector and a
cloud server, wherein the mobile terminal is used for automatically collecting and / or inputting actual emotional state information by a user; the
detector is used for collecting body signals by a method of beingindirectly or directly in contact with a body of the user, and the body signals are sent to the
cloud server through the mobile terminal; and the
cloud server is used for determining the theoreticaldepression state information corresponding to the body signals by using a depression state analysis
algorithm based on the preset
database. The depression monitoring device is characterized in that the cloud
server is based on actual emotional state information and the body signals of the user, and / or external conditions to analyze variation trends of depression state, and when the state variationtrends of the cloud
server in the state of depression exceeds the threshold at a foreseeable point-in-time, the mobile terminal sends to an alert prompt and / or activity suggestion to the current useror the associated mobile terminal. The depression monitoring device can accurately monitor the variation trends of the depression state of the user, thereby effectively reminding and guiding.