There are three main causes of Parkinson’s disease: 1, environmental impact: now more serious air and water pollution, long-term exposure to some chemicals, chemicals or heavy metals, these may lead to the onset of Parkinson’s disease: 2, ageing: Parkinson’s disease onset age is 40-70 years old, the peak incidence is between 50-60 years old. 65 years old and above, the prevalence of 1.7%. This is quite a large number. Ageing brings about a decrease in nigrostriatal, striatal, and dopamine substances is a major cause; 3, genetic aspects: science now shows that Parkinson’s disease has a certain tendency to gather in families, but is not a genetic disease in the traditional sense, and only 10% of patients may have offspring with Parkinson’s disease.