Objective: To assess the Longitudinal invariance of the Geriatric Depression Scale(GDS) across time in Chi-nese elders. Methods: The sample consisted of 267 elderly who were selected from Hunan, Shandong and Beijing, the fol-low-up assessment was conducted 6 months after the time of the first assessment. Questionnaires of GDS-15 was adminis-tered to elders for measuring their depression levels and multi-group confirmatory factor analysis was used to structural va-lidity. Results: The configural, metric, sca...