To develop an assessment scale for the stroke recurrence emergency response ability of family members of stroke patients, and to test its reliability and validity. Methods: The initial draft of the scale was formulated based on literature review, semi-structured interview, and two-round expert consultation using the Delphi technique. By conducting a questionnaire survey on the family members of stroke patients in 3 tertiary hospitals in Xi'an, the item selection, validity, and reliability of the scale were evaluated. Results: The final questionnaire included 35 items in 5 dimensions. The total Cronbach's α coefficient was 0.882, the split-half reliability coefficient was 0.851, and the total content validity (S?CVI) was 0.935. Exploratory factor analysis (EFA) extracted 10 common factors with eigenvalues greater than 1, which belonged to 5 dimensions. The cumulative variance contribution rate was 63.792% , and the 10 factors were consistent with the preliminary design. Pearson's correlation coefficient between all factors and the total scale score was 0.455～0.867. Conclusion: The development process of the scale was scientific and rigorous. The scale exhibits good reliability and validity, and it can effectively evaluate the emergency response ability of stroke patients' family members to stroke recurrence.