Objectives: Emotional regulation refers to strategies that reduce, maintain or increase an emotion in people. The purpose of this study is to standard the Cognitive Emotion Regulation Questionnaire in Tehran aged population. Methods: The sample was selected randomly from 20 Jahandidhgan associations and consisted of 500 aged people from whom 338 people remained till the end of study. In order to define the dimensional structure a Principal Component Analysis with Varimax-rotation on item level was performed. Results: The alpha coefficients of the various subscales across the diverse populations was 0/798 but the items 5, 7, 31, 6, 8, 32, 30, 29 and 12 had week co efficiency (0.84) which was consider as subscale. Discussion: After some steps of analysis with Varimax-rotation, 7 factors was created and the 8th factors which was categorized as subscale was named as "acceptance of negative happenings". These results prove that the cognitive coping strategies can be used in Iranian aging population.