Abstract: Parkinson's disease was primarily considered to be a movement disorder affecting only the extrapyramidal system. Although the non-motor symptoms such as neuropsychiatric symptoms, dysautonomia, sleep disturbances and olfactory dysfunction, etc., were also common, they were often misdiagnosed or neglected. This paper would review the manifestation, relevant factors, pathogenesis and treatment of non-motor symptoms of Parkinson's disease.

Key words: Parkinson's disease, non-motor symptoms, review