PROBLEM TO BE SOLVED: To provide a depressive state determination method and a depressive state determination device capable of easily determining a depressive state at high accuracy.SOLUTION: A depressive state determination method involves: measuring a beat interval of a subject and an acceleration speed or an angular speed relating to a movement of the subject calculating all of formulas (1) to (9) and determining that the subject is in a depressive state when at least one of the formulas is satisfied. [A] awakening time beat interval/active massC8 ...(8), (LF/HF)×active massC8・・・(8)、(LF/HF)×活動量
