Nerve stimulation is performed while suppressing occurrence of symptom caused by sinus node dysfunction or atrioventricular node dysfunction. Provided is a nerve stimulation apparatus including: a stimulation signal generator configured to output a stimulation signal to a nerve a cardiac-event acquisition unit configured to acquire cardiac events and a control unit configured to control the stimulation signal generator such that sinus node dysfunction or atrioventricular node dysfunction is determined to be occurring and energy of the stimulation signal is reduced when a time interval value between the adjacent cardiac events acquired by the cardiac-event acquisition unit exceeds a predetermined threshold.
