The physiological condition is mostly caused by heavy physical labor or mental tension, after rest or mental relaxation, the shaking of the index finger can be significantly reduced or disappeared, generally no special treatment. Usually pay attention to rest, avoid heavy physical labor, can participate in appropriate physical exercise to relieve mental tension. The pathological condition is mostly seen in hyperthyroidism Parkinson’s. Patients with hyperthyroidism can also be accompanied by panic, sweating, fear of heat, insomnia, temper tantrums, etc. Patients check the thyroid function long suggests that T3, T4 increased, TSH decreased. Parkinson’s is mostly seen in the elderly and is divided into Parkinson’s disease and Parkinson’s syndrome. The cause of Parkinson’s disease is unknown, while Parkinson’s syndrome mostly appears after traumatic brain injury, cerebral hemorrhage and cerebral infarction. The main manifestations of Parkinson’s disease are hand tremors, slowed movement, increased muscle tone, and reduced expression.