The depressive state determination method of the present invention measures the beating interval of the subject and the acceleration or angular velocity accompanying the movement of the subject (hereinafter referred to as "activity amount"), and at least one of the conditions [A] or [B] is When it is satisfied, it is characterized in that it is determined that the subject is in a depressed state. [A] At least one expression among beat interval × activity amount < C1, HF × activity amount C3 in the awakening time of the subject is calculated, and the expression is satisfied. [B] In the sleep time of the subject, at least one expression among beat interval/activity 展开▼
