Nutrition and hydration are essential elements for maintaining life. However, when life comes to the last days or weeks, many factors can lead to inability to eat or decrease of the ability to eat, and the cachexia state is sometimes seen. Whether artificial nutrition and hydration should be given to terminally ill patients regularly has become a plight of ethics, law and clinical concerns in between medical personnel and the patient's families. The purpose of this paper is to review relevant literatures and provide a reference for shared decision making in this issue and look forward to further improving the quality of end-of-life care.