Parkinson’s syndrome refers to a group of movement disorders caused by various reasons other than idiopathic Parkinson’s disease, which are similar to Parkinson’s disease in terms of tremor, muscle stiffness, slow movement and postural balance disorder, including secondary Parkinson’s syndrome, hereditary Parkinson’s syndrome, Parkinson’s superimposed syndrome and so on. Different types have different causes, as follows: Secondary Parkinson’s syndrome, the causes include: 1. Infection: such as after encephalitis, lentivirus infection, etc.. 2.Drugs or toxicity: such as neuroleptics, rifampicin, metoclopramide, flunarizine, etc. can lead to reversible Parkinson’s syndrome, which occurs after treatment or months after stopping the drug, and carbon monoxide, carbon dioxide poisoning or manganese, mercury and so on can also be caused. 3, vascular: such as multiple cerebral infarction, hypotensive shock. 4, in addition, boxing encephalopathy and other traumatic factors can also lead to tremor, bradykinesia and other Parkinson’s disease. Hereditary Parkinson’s syndrome is a group of Parkinson’s disease-like performance of movement disorders caused by genetic etiology. Examples include autosomal dominant Lewy body disease, Huntington’s disease, hepatomegaly, and spinocerebellar ataxia. Parkinson’s symptoms associated with these diseases are often characterized by rigidity and hypermobility, resting tremor is rare, and most of them start with bilateral limbs at the same time, and the treatment is mostly insensitive to levodopa. Parkinson’s superimposed syndrome, also known as multi-systemic lesions, refers to a group of neurodegenerative disorders that have Parkinson’s disease-like symptoms clinically and different histologic features pathologically. For example, Parkinson’s syndrome-dementia-amyotrophic lateral sclerosis complex, progressive supranuclear palsy, multi-system atrophy or degeneration, etc. The etiology of the disease is still unclear, and it may be the process of gradual degenerative lesions of different neurological systems of the patient due to the involvement of multiple factors. The etiology of Parkinson’s syndrome involves many aspects, and patients with tremor, bradykinesia, muscle stiffness and other Parkinson’s disease-like manifestations should consult a doctor in a timely manner to find out the cause of the disease and guide the treatment by taking into account the patient’s symptoms, medical history, and relevant physical examination and auxiliary examination.