In this study, the structural relationship between attitudes toward death, the pattern of perception of God, perceived childhood attachment, and social support mediated by mental health and spiritual intelligence was examined in the form of a causal model. The research is applied in terms of purpose and descriptivecorrelational in terms of data collection method. The statistical population of 200 students of Birjand University was selected by cluster sampling method. Six valid scales include: Wong et al. 's Death Attitude Scale (1994), Keynes & Magyarmo Mental Health Scale (2003), King's Spiritual Intelligence Scale (2008), Imagination of Lawrence (1997), Hazen and Schiver (1986) and the social support of Catrona and Russell (1987). It was used to measure variables. Validity and reliability of all approved instruments. Data analysis was performed by path analysis method of structural equation modeling in Amos software. The results showed that the model fits well with the data, which means that: in a positive attitude towards death and its active acceptance, the pattern of perception of God (influence, challenge, benevolence), social support (value, dependence, cohesion. Perceived attachment pattern (safe parents); Spiritual intelligence (existential thinking, production of personal meaning, development of consciousness) and mental well-being (mental health and social health and positive emotions), are effective. In a negative attitude to death and Fear and avoidance of those insecure parents and negative emotions play a major role. The pattern of perception of God and perceived social support due to mental health and perceived childhood attachment due to spiritual intelligence have an indirect effect on students' attitudes toward death. Imagination, social support, perceived childhood attachment, spiritual intelligence, and mental health can account for 61% of changes in attitudes toward death.