The involuntary movement of the right index finger may be caused by physiological reasons, such as fatigue, etc. can be cured; may also be caused by disease factors, such as hyperthyroidism can be cured; if the idiopathic tremor, Parkinson’s disease can not be completely cured. 1. Physiological reasons: when the patient is emotionally excited, there may be involuntary movement of the right finger, through a period of rest and amorous emotions can return to normal. 2. Disease factors (1) Hyperthyroidism: at the onset of this disease, due to the body’s metabolic enhancement, there may be involuntary movement of the right index finger. It can be cured by methimazole and iodine 131 treatment. (2) idiopathic tremor: the cause of this disease is not known, the onset of the right index finger, involuntary movement. The main symptomatic treatment, such as the use of metoprolol, propranolol and so on as prescribed by the doctor. (3) Parkinson’s disease: the onset of this disease will appear right index finger involuntary movement. This disease can not be cured, the main oral medication to slow down the development of the disease, improve the patient’s clinical symptoms, such as compound levodopa, piribedil, etc.. Involuntary movement of the right index finger should go to the neurology department of the hospital, under the guidance of the doctor to clarify the cause of the disease and give targeted treatment, not blindly use their own medicine.