A biomedical electrode which is detachably attached to a garment and includes: an electrode coming into contact with a living body clothed in the garment to acquire a biological signal emitted by the living body; and a locked section which is conductive, is electrically connected to the electrode, is detachably locked to a locking section which is conductive and is provided in the garment, and is electrically connected to the locking section when locked to the locking section.