If dementia is diagnosed at an early stage, the patient could be able to live as normal for seven to ten years with medicine or even reverse it. Unfortunately, most patients with dementia are generally discovered at a late stage, living just three to four years, and are associated with aggressive tendencies and significant memory loss. Therefore, early diagnosis is crucial to solving this problem. To acquire a report on cognitive health and evaluate whether a user is at risk of developing dementia, I track and analyze the user’s reading behavior, including eye movements, time spent reading each time, and frequency. It is necessary to contact a doctor if there are more abnormal behaviors over an extended period (one or two months).