Background: Prevalence of stroke and traditional filial responsibility involve adult children in caregiving to their parent stroke survivors in China. Support resources are insufficient because of the shrinking size of family and the underdeveloped support system. Purpose: The aim of this study was to identify the correlates of perceived social support among adult child caregivers of parent stroke survivors in China. Methods: A cross-sectional correlational design was used in this study. A nonproportional quota sample of 126 adult child caregivers was recruited from Zhejiang Province, China. Data were collected at either the hospital stroke units or the respondents' homes using structured questionnaires of caregiving dyadic demographics and caregiving characteristics, 14-item Activities of Daily Living, 15-item Mutuality Scale, and 12-item Multidimensional Scale of Perceived Social Support. SPSS 17.0 was used for analysis. Results: Caregivers' mutuality, education, full employment or being retired, monthly income, having a co-carer, and having a father as the care receiver were significantly positively associated with caregivers' perceived social support. However, mutuality was not significantly associated with caregivers' perceived social support after the other factors were adjusted. Conclusions/Implications for Practice: Adult child caregivers with higher levels of mutuality, education, or monthly income; who are fully employed or are retired; who have a co-carer; or who are caring for a father perceived more social support. Nursing strategies and social policies need to be directed to enhance caregiver mutuality and support caregiving efforts.