There are many reasons why the right hand shakes and the left hand doesn’t, such as prolonged lifting and pulling, benign idiopathic tremor, Parkinson’s disease, intracranial tumors and so on. 1. Prolonged lifting and pulling heavy objects: If the right hand lifts and pulls heavy objects for a long time, the right hand will be overly fatigued, which will lead to shaking of the right hand. 2. Benign idiopathic tremor: the cause is unknown, can occur at any age, the hand will shake when doing fine movements, used to complete the fine movements such as writing, eating, tying shoes, etc. The right hand will shake and the left hand will not shake. 3. Parkinson’s disease: mainly occurs in the elderly, with stationary tremor of the hands, which may start with one hand shaking and then develop to bilateral hand shaking. 4. Intracranial tumors: intracranial tumors compress or stimulate part of the brain tissue, causing part of the neuron damage, one side of the limb dysfunction, the right hand shaking the left hand does not shake. Warm tips:If it is not due to long time lifting and pulling heavy objects that cause right hand shaking and left hand not shaking, you should go to the hospital in time for examination, clear diagnosis and timely treatment.