The purpose of this study was to examine the influence of negative rumination in youth on death anxiety and coping with death anxiety. Subjects were 221 (102 male, 119 female) undergraduate students, who were asked to answer a scaled set of questionnaires about Negative Rumination, Coping with Death Anxiety and Death Anxiety. The result clarified that "Negative Rumination Trait" promoted "Consideration Coping", and "Consideration Coping" promoted "Death Anxiety". Moreover, it was indicated that "Uncontrollability of Negative Rumination" promoted "Death Anxiety" directly. In addition, it was revealed that "Body Management Coping" and "Avoidance Coping" promoted "Death Anxiety", and that "Acceptance Coping" decreased "Death Anxiety".