Many people with Parkinson’s disease often take Medopa or Benadryl with meals like any other medication, and often end up with poor results, thinking it’s the wrong medication. Even many neurologists are not quite sure if taking it. In fact, it should be taken about half an hour before a meal, so as to avoid the high protein inhibiting the absorption of dopa after the meal. In addition, many people also believe that a chronic disease should be “supplemented”. Patients are often given high protein foods such as snapper while taking dopa preparations. As a result, instead of getting stronger, the patient’s condition recurs and symptoms worsen. Parkinson’s disease itself is not contraindicated, and the diet should be arranged in accordance with the principle of a balanced diet. For Parkinson’s disease patients with normal chewing ability, they can refer to the diet structure of normal people; for patients with poor chewing ability and digestive function, they should be given soft food, semi-liquid food and liquid food according to the situation to ensure the intake of calories, protein, vitamins and minerals. Patients with Parkinson’s disease usually take levodopa drugs, which have a characteristic: they combine with proteins in food and affect absorption, so taking the drugs must be spaced out from eating meat and dairy products. For example, the protein content of milk has an effect on the absorption of levodopa drugs and can reduce their efficacy, so it is recommended to drink milk at night before going to bed. In addition, it is recommended to use vegetable oil for cooking food. As for foods such as cereals, vegetables and fruits, they have less effect on levodopa and can be consumed without worry. In conclusion, the diet of Parkinson’s disease patients should take into account the condition, nutrition and medication, and it is best to consult with doctors and dietitians. Patients who are not yet taking levodopa do not need to be overly concerned about protein intake.