The reasons for patients with cell phone hand tremor include Parkinson’s disease, idiopathic tremor, cerebellar disease, as follows: First, Parkinson’s disease: the most common is Parkinson’s disease, Parkinson’s disease is a neurodegenerative disease of the elderly over the age of 60 years old, the patient in addition to the hand tremor, but also can have bradykinesia, myotonia, as well as some postural and gait abnormalities. Second, idiopathic tremor: idiopathic tremor is related to certain genetic factors, and patients usually show tremor of the limbs, which can be relieved by taking Xanax. Third, cerebellar diseases: cerebellar diseases include cerebral infarction, cerebellar tumor, cerebral hemorrhage, which can lead to cerebellar symptoms, including hand shaking when holding things. Therefore, there are many reasons for patients to have trembling hands, and it is recommended to go to the Neurology Department of the hospital for consultation if they have trembling hands.