The causes of hand tremors in patients with cell phones include Parkinson’s disease, idiopathic tremor, and cerebellar diseases, as follows: First, Parkinson’s disease: the most common is Parkinson’s disease, Parkinson’s disease is a neurodegenerative disease of the elderly over 60 years of age, patients can also have motor retardation, increased muscle tone, and some abnormalities in posture and gait, in addition to hand tremors. Second, idiopathic tremor: idiopathic tremor is related to certain genetic factors, and patients generally show tremors of the limbs, which can be relieved by taking insulin. Third, cerebellar diseases: cerebellar diseases, including cerebral infarction, cerebellar tumors, cerebral hemorrhage, can lead to cerebellar symptoms, including hand tremors when holding something. Therefore, there are many reasons for patients to have hand tremors, and it is recommended to visit the neurology department of the hospital when hand tremors occur.