This aims of this longitudinal study were to identify the risk factors of and depressive mood in caregivers who received hospice care 6 months after their patients' death, and the cutoff pint of the bereavement risk index, as well as, the prevalence of persistent complex bereavement disorder (PCBD). There were 30.28 and 4.59% of caregivers with depressive mood and PCBD, respectively. The risk factors included resistance to the reality of patients' death, anger, self-blame and guilt, support networks, and coping. The cutoff points of total bereavement risk index and five-item short form were 10/11 and 9/10, respectively.