Objective: To examine the relationships between family resilience and posttraumatic growth (PTG) of breast cancer survivors and caregiver burden among principal caregivers in China.<bold>Methods: </bold>Participants in this cross-sectional study comprised 108 women aged 26 to 74 years (M = 49, SD = 9) with early-stage breast cancer and 108 principal caregivers. Participants were recruited from a comprehensive cancer center of a public hospital in Shandong Province, China.