Alzheimer’s disease can eat a full meal, but it is better to try to eat seven or eight minutes of fullness. When Alzheimer’s disease occurs, patients may have abnormal mental and behavioral symptoms, which may affect their eating, and they may even be unable to tell if they are hungry or full. Although eating a full meal will not have a significant effect on the condition of dementia, if the amount of food eaten is too large, it may cause food accumulation. Therefore, it is better to try to eat seven or eight minutes of fullness. If patients are diagnosed with Alzheimer’s disease, they can be treated with drugs such as donepezil hydrochloride tablets, olanzapine tablets, and strychnine A tablets under the guidance of professional doctors. And it is necessary to communicate with the patient frequently to keep him/her optimistic.