Objective: To develop a Traditional Chinese Medicine (TCM) assessment scale for frailty syndrome in the elderly and to evaluate its reliability and validity. Methods: An item pool was constructed through literature review and searches of the *Chinese Medical Canon*. A preliminary scale was developed through four rounds of Delphi expert consultation and a pilot survey. A cross-sectional survey was conducted using a convenience sample of 300 elderly patients. Using the Fried Phenotypic Frailty Scale as the gold standard, item analysis, Cronbach’s α coefficient, exploratory factor analysis, and ROC curve analysis were performed. Results: After item screening, the final scale comprised 5 core symptom items (Table A) and 38 syndrome items (Table B). For Table A, the criterion-related validity was r = 0.929 (P < 0.05), AUC = 0.957, sensitivity = 0.949, and specificity = 0.859; Table A+B showed a test-retest reliability of r = 0.648 (P < 0.05), an AUC of 0.827, a sensitivity of 0.606, and a specificity of 0.911; the total scale had a Cronbach’s α of 0.872. Conclusion: The developed Traditional Chinese Medicine (TCM) frailty syndrome scale demonstrates good reliability and validity and can be used for screening frailty in the elderly and for distinguishing TCM syndrome patterns.