If the hand shaking is only when measuring blood pressure it may be due to a psychological state of over-concern. If there is also hand shaking in general it may be related to a somatic disorder. Some people may have white coat syndrome, which causes nervousness and anxiety about medical tests, leading to the somatization of negative emotions and causing the hands to shake when measuring blood pressure. Fear of the blood pressure measuring instrument and excessive desire to cooperate with the doctor, resulting in excessive concern, causing nervous hand tremor, are all psychological factors. Hand tremor may be caused by hyperthyroidism, Parkinson’s syndrome, sequelae of cerebral infarction, or heavy alcohol consumption. It is necessary to carry out other auxiliary examinations, clarify the diagnosis, and carry out treatment.