Tertiary prevention: Tertiary prevention targets the middle and late stages of Parkinson’s disease, with the goal of delaying the disabling process and life-threatening complications. This stage requires greater involvement of caregivers. When Parkinson’s disease enters the middle stage especially after the development of drug complications, if the disease is more than 5 years old, there is a balance problem in the drug prescribing period and there are no contraindications, early surgical treatment with a brain pacemaker should be done to improve motor function, reduce the use of anti-Parkinson’s disease drugs and prolong the time of self-care. For advanced Parkinson’s disease, caregivers should encourage patients to do more active exercises, such as eating and dressing by themselves and appropriate household chores, which can maintain motor and cognitive functions, despite the patient’s tremor, limb stiffness, slow movement and speech impairment that lead to incomplete self-care. Family members should also pay more attention to the patient’s emotional and intellectual condition. Patients with advanced Parkinson’s disease are accompanied by severe depression and are at risk of suicide, and psychiatric symptoms such as hallucinations and delusions can lead to aggressive behavior, which should be treated with appropriate medication; and cognitive decline can aggravate balance and gait disorders, which can lead to falls and fractures. Patients should be encouraged to read books, newspapers or participate in recreational activities such as playing cards, or take medication in severe cases Treatment. The patient can be screened for swallowing disorders with the Puddlefield drinking test, and the appropriate treatment method can be applied with reference to the seven levels of Caiten’s classification. Encourage patients to do more opening guide method to overcome swallowing difficulties; for patients who are severely emaciated and choke and cough even when eating soft food, early nasal feeding or intravenous nutrition should be used to avoid pneumonia, asphyxia and malnutrition. Patients in the middle and late stages must be accompanied by balance problems. More practice of squat guiding method to lower the center of the body can improve the balance function and gait, and reduce the occurrence of falls and fractures. For patients who are bedridden for a long time, strengthen turning and help patients to move their limbs and joints passively to prevent contracture of joints and limbs, bed sores and pneumonia. Patients with advanced disease are often hospitalized for fractures due to falls and recurrent pneumonia, and are two of the most common causes of death in Parkinson’s disease. Using proper preventive measures to reduce the occurrence of these serious complications can reduce the physical and psychological pain as well as the financial burden on patients and their families.