PROBLEM TO BE SOLVED: To solve the problem in which a diagnosis support device capable of supporting the diagnosis of an analyte by appropriately detecting the secretion amount of the saliva or tear of the analyte cannot be provided.SOLUTION: The diagnosis support device of the present invention includes: a sensor 101 for detecting, with time, the information indicating the secretion amount of the saliva or tear as the biological fluid of an analyte； and an output unit 106 for outputting the information corresponding to the variation information as the information detected by the sensor 101 with time. Thus, the diagnosis support device can support the diagnosis of the analyte by appropriately detecting the secretion amount of the saliva or tear of the analyte.
