The purpose of this study is to develop and validate a scale that can detect irrational beliefs of married women in Korea. For this purpose, scale items were developed based on conceptual and measurement model derived from the analysis of related literature. A preliminary surveys and a main survey were conducted with married women from 30 years old to 65 years old, who were residing in Jeollabuk-do. As a result of the reliability analysis and validity analysis, this study confirmed that an irrational belief scale for married women can be composed of five factors -need for approval, self-downing, need for comfort, need for achievement, demands for fairness- and can be made of 28 scales items. In addition, as a result of criterion validity analysis on the depression scale (Korean Ver. CES-D), this study found that there is a close relationship between irrational beliefs and depression. Irrational beliefs can cause depression. Based on this results, it is expected that married women s depression can be predicted, using an easy and concise scale developed by this researcher. In the actual counseling field, my scale will be helpfully used if you follow Ellis’s Rational, Emotive, Behaviour Therapy. My scale has special merit of concise sentence and non-overlapping of questions.