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Introduction: Several adjustment scales are available for Diabetes, but, unfortunately most of them focused on the limited dimensions of diabetes and are not specific for type 2 diabetes. The aim of this study was to develop a multidimensional scale for Diabetes type 2 Adjustment Assessment and to test preliminary validity, reliability and clinical utility of the scale for this population. Methods: In this methodological design study, the Diabetes Adjustment Assessment Scale was developed and the psychometric properties of this scale was assessed in patients with Type 2 diabetes. This study included internal consistency, content validity and exploratory factor analysis. Results: 1000 patients with type 2 diabetes completed the 45-item Diabetes Adjustment Scale. After eliminating two item, the 43-item measure demonstrated good internal consistency (Cronbach’s α= 0.75). Factor analysis identified eight factors including; reshape (11 questions), seek to acceptance of illness (7 questions), normal life with the disease (6 questions), initial self-management (2 questions), comparing (4 questions), initial imaging of illness (4 questions), return to resources(3 questions), and advanced self- management (6 questions). Conclusion: Considering that validity and reliability indexes of the scale are reported in an appropriate level, it can be used as a valid and reliable tool in measuring level of adjustment with type2 diabetes.