Suicide ideation is a serious problem in mental illness. The medication treatment is slow to take effect, of which intervention effect on suicidal ideation is limited. Physical therapy is widely used as an adjuvant therapy, which mainly regulates the central nervous system through physical action (such as electric, magnetic, etc). The common methods of physical therapy include electroconvulsive therapy, transcranial magnetic stimulation, magnetic seizure therapy, vagus nerve stimulation and other neuromodulation techniques. This paper mainly reviews the application and efficacy of physicalneuromodulation intervention on suicidal ideation in patients with mental illness.