Since forgetfulness is an important symptom in many elderly people with dementia, and since they often have reduced judgment about themselves and do not even acknowledge that they have a problem, and are often evasive or in denial about the doctor’s questions, the person who knows the patient best should accompany them during the visit. The best companion is a family member who lives with the patient and has the closest contact with the patient. The information provided by the companion is very important in determining the condition of the patient. Therefore, before the visit, the companion needs to make some preparations: 1. organize the patient’s condition in your mind in order of priority. If it is a follow-up visit, you should also summarize the medication and treatment effect after the last visit so that you can give an account to the doctor. 2. When describing the patient’s condition, you should pay attention to the following questions: when did you first notice the patient’s abnormality, what were the initial symptoms, what were the subsequent problems, whether the condition was getting worse or better, whether you had been examined and treated, what diseases you had before, what was the patient’s previous intelligence and personality, whether you had any hobbies, what changes in your ability to live, whether there were other patients in your family, etc. Do you have any other similar patients in your family, etc.? 3. Answer the doctor’s questions in detail and accurately, do not be vague, do not hide, and do not be afraid to be embarrassed. This will enable the doctor to get enough information for diagnosis. 4.Hospital is a public place, the accompanying person should follow the patient and settle the patient during payment, medication pick-up and consultation so that the patient will not get lost. If necessary, you can seek the help of the nurse guide.