The causes of hand tremors in patients are mainly considered in the following aspects: first, Parkinson’s disease, Parkinson’s disease caused by hand tremors, the main performance is resting tremor, patients will show muscle stiffness, gait appears slow when movement. Secondly, part of the disease is idiopathic tremor, most patients show involuntary trembling of the head or upper limbs, especially after emotional stress, hand tremor will have increased, when patients drink alcohol can reduce the symptoms, or completely disappear. Third, consider systemic diseases caused by, for example, hyperthyroidism, will be manifested as trembling hands. Fourth, it may be a pharmacogenic tremor, such as patients taking chlorpromazine, Flunarizine, Gastrodia, or Flunarizine Hydrochloride capsules for a long time, etc.