Purpose: Diabetes Self Management Behavior (DSMB) is crucial for the elderly with diabetes to prevent diabetes complications and to improve their quality of life. The Purposes of this study were to investigate the current status of DSMB and to identify motivational factors related to DSMB in community dwelling older adults with diabetes. Methods: The subjects were 150 diabetic elderly who visited 2 community senior centers in S city. DSMB scale consisted of 5 sub-domains; Being active, healthy eating, regular medication, glucose monitoring, and foot care rated by a scale with a range of 0 to 7. Personal motivation(i.e., intention to behavior) and social motivation including family support and health professional support were measured. Results: The mean score of DSMB was 4.27. The mean score of intention to behavior was 2.52. DSMB was related to Intention to behavior (r=.461, p<.001), family support (r=.342, p<.001), and health professional support (r=.284, p<.001). In regression analysis, a total of 33.4% of variance in DSMB was accounted for by intention to behavior, family support, and health professional support. Conclusion: To improve DSMB of the elderly, diabetes educator should consider on the strategies across both personal and social motivation related to DSMB.