Among Parkinson's disease patients, constipation is a very common clinical symptom. In fact, many patients have experienced constipation for many years before the onset of Parkinson's disease symptoms, mainly due to the impact on some autonomic nerves in the intestines. For Parkinson's patients experiencing constipation, the main suggestions are: First, be sure to drink plenty of water. Drinking enough water can sufficiently lubricate the intestines and facilitate smoother bowel movements. Second, be sure to eat plenty of fresh vegetables and fruits. Vegetables and fruits are rich in vitamin C and can promote gastrointestinal motility. Additionally, it is recommended for patients to eat more bananas, as bananas have an evident laxative effect. Also, eat less of certain foods that can dry out the stool, such as sweet potatoes and chestnuts. If necessary, patients can be given laxative medications, and if bowel movements are extremely difficult, enemas can also be administered.