Objective To test the reliability and validity of Dementia Quality of Life Scale for Older Family Carers（DQoL-OC） in Chinese version. Methods According to the modified version of Brislin retranslation model,the original DQoL-OC was translated into Chinese version. The convenience sampling method was used to survey 242 older family caregivers from outpatient and inpatient patients. 50 caregivers of them were randomly selected to retest after 30 days,and the data was collected to analyze the reliability and validity. Results The Chinese version of DQoL-OC contains 22 items with one dimension,which is consistent with the original scale. The I-CVI was 0.83~1.00;the S-CVI/UA was 0.82;the S-CVI/Ave was 0.91;the structure validity χ²/DF was 2.33;the approximate error mean square root（RM-SEA） was 0.07;the fitting goodness index（GFI） was 0.92,and Tucker-Lewis coefficient（TLI）was 0.92.The internal consistency index Cronbach’s α coefficient was 0.92;the test-retest reliability was 0.81. Conclusion The Chinese version of DQoL-OC has good reliability and validity,which can be used to evaluate the quality of life of older family caregivers of dementia patients. It can provide corresponding bases for researchers to make targeted intervention strategies for the older family caregivers.