Low blood pressure caused by Parkinson’s is postural hypotension, which can be treated by general treatment, changing drug dosage and medication. 1. General treatment: adjusting diet, eating less and more meals, increasing sodium intake, avoiding prolonged exposure to high temperature, avoiding rapid change of body position, changing daily life style such as elevating the head while sleeping, avoiding hard urination and defecation, and using elastic stockings to help blood return. 2. Changing the dose of the drug: Methyldopa is a commonly used drug in the treatment of Parkinson’s disease, and its adverse effects suggest that upright hypotension is occasionally seen, which can usually be improved by reducing the dose of the drug. Therefore, the dose of the drug can be appropriately reduced to observe whether the clinical symptoms have improved. 2. Drug therapy: if the symptoms are more serious or the attacks are more frequent, you can choose the drug therapy such as Midodrine, Droxidopa, etc., but people with congestive heart failure and renal function abnormality should be used with caution. Low blood pressure caused by Parkinson’s disease should be treated in time, and the relevant drugs should be used under the guidance of a doctor.