In Thanatology, the discussion of death includes both the death of oneself and others. Since death is an event that takes place in various human relationships, the problem of death in Thanatology should be discussed with interest in this world rather than in the after life. This article aims to examine these issues through the thoughts of Mahayana Bodhisattva. When death was brought into individual sphere, the reflection on death is based on personal autonomy. This thought is evident in the discussions about the cessation of life-sustaining treatment in Korea and Taiwan, and the ‘Syukatsu’ activity in Japan which is held towards the end of one’s life. However, these perceptions and attitudes need to be reviewed in the point that the reflections on death are practiced at the individual level. Since Thanatology fundamentally deals with the sufferings for others perceptions of death, examining Mahayana Bodhisattva s view of life and death will help to broaden our understanding of Thanatology.