Objectives: The aims of this study were to verify actor and partner effects, by examining the effects of family resilience on post-traumatic stress symptoms (PTSS) among Chinese breast cancer patients and their primary family caregivers. Methods: In this cross-sectional study, 104 breast cancer patients (age range 20–75, Mean = 47, Standard Deviation = 10), and their principal caregivers (n = 104), were recruited from a comprehensive cancer center of a public hospital in China.