Parkinson's disease is a relatively common neurological disorder, with a higher incidence in middle-aged and elderly people. Currently, there is no specific cure for the disease, but there are many medications that can significantly improve the symptoms of Parkinson's disease. The commonly used medications mainly include: The first major category is Levodopa preparations. This type of medication has good efficacy but can cause some adverse drug reactions and may provoke the occurrence of motor complications. It should be taken under the advice of a doctor. The second major category of drugs is dopamine receptor agonists. These drugs also have relatively good effects and can improve the motor symptoms of patients, though they may be a bit expensive. Third, anticholinergic drugs. They can significantly improve the patients' normal symptoms, but should not be taken by patients with cognitive impairments. Additionally, there are monoamine oxidase inhibitors and COMT inhibitors that can also be used.