Mind wandering (MW) is the shift in the contents of thought away from an ongoing task to self-generated thoughts which is unrelated to the task. MW is thought to have the role of integrating one’s experiences into a meaningful context through autobiographical reasoning. However, the relationship between MW and autobiographical reasoning is only a theoretical suggestion and no previous studies have directly examined this relationship. In this study, we performed a questionnaire survey to clarify the role of MW that integrates experiences by examining whether there is a relationship between MW and autobiographical reasoning. As a result, a positive correlation was found between the Mind-Wandering Questionnaire and the Thinking About Life Experiences (TALE) scale. There was also a positive correlation between the Daydream Frequency and TALE scales. This result indicates that MW is related to autobiographical reasoning.