Causes of hand tremor, mainly to consider the following aspects: First, Parkinson’s disease, Parkinson’s disease caused by hand tremor, the main manifestation of stationary tremor, patients will be shown as muscle stiffness, movement gait appears slow. Second, part of the idiopathic tremor disease, most of the patients show for the head or upper limb involuntary tremor, especially in emotional stress, hand tremor will be aggravated, when the patient drinking alcohol can reduce the symptoms, or completely disappeared. Third, consider the systemic diseases caused by, such as hyperthyroidism, will be manifested in the hands of the tremor. Fourth, it may be pharmacogenetic tremor, such as patients taking chlorpromazine, Phenetidine, gastroenterology, or a long time to take flunarizine hydrochloride capsules and so on.