Hand tremor in Parkinson’s disease is mainly considered to be related to reduced dopamine levels. Due to the degeneration of nigrostriatal neurons in the basal ganglia, dopamine secretion decreases, which causes an imbalance in the ratio of dopamine and acetylcholine, leading to changes in nerve excitability and causing symptoms of hand tremor. Hand tremor in Parkinson’s disease is a stationary tremor, and the symptoms of hand tremor can be aggravated by exertion and emotional excitement, and disappear after sleep. In addition to the symptoms of hand tremor, Parkinson’s disease may also present muscle tonus, motor slowing, posture and gait abnormalities. After the onset of the disease, we should go to the Neurology Clinic in the hospital, and the doctor will choose the medication according to the patient’s condition to treat the symptoms, slow down the development of the disease and improve the patient’s quality of life.