The tremor that occurs when the limb maintains a certain position is called postural tremor, and it is most common when the upper limb is flat and extended. The tremor is often suppressed during active movement, strengthened during emotional stress, and disappears during complete rest and sleep. Postural tremor is one of the symptoms of Parkinson’s disease, the exact cause of Parkinson’s disease is still not very clear, therefore, the preventive measures lack of precise targeting, but many studies have confirmed that many risk factors and the midbrain nigrostriatal dopamine neuron degeneration, necrosis there is a certain cause and effect relationship, if you can take appropriate preventive measures against the risk factors, the prevention of the onset of Parkinson’s disease and slow down the course of the disease progression is certainly beneficial. . Preventive measures for postural tremor caused by Parkinson’s disease: 1. Stay away from pesticides and herbicides; 2. Stay away from renovation pollution; 3. Avoid contact with substances that are toxic to humans: carbon monoxide, carbon dioxide, manganese, mercury, etc.; 4. Avoid taking drugs such as fenestrazine, lisinopril, chlorpromazine, etc., which induce Parkinson’s disease; 5. Prevent cerebral atherosclerosis: manage blood pressure, blood sugar, and blood lipids at normal levels; 6. Strengthen physical exercise and brain activity to increase the activity of nerve cells; 7. Seek early medical treatment, early diagnosis, early treatment and early benefit if you find hand tremor, foot tremor, slow walking, slow activity, stiffness and other manifestations.