Objectives: To evaluate the psychometric properties of the C‐CaSPUN in Chinese family caregivers (FCs) of cancer survivors (CaS) and to compare the unmet needs of CaS‐FC dyads. Methods: A questionnaire survey, consisting of five Chinese version measurement scales, was used to collect data from CaS‐FC dyads. Statistical methods used included exploratory factor analysis (EFA), confirmatory factor analysis (CFA), Cronbach's α, intraclass correlation coefficient (ICC) and Pearson's correlation.