So far, many cases of children with autism spectrum disorder (ASD) have been found to have various comorbidities, one of which is executive function. These skills, support the flexibility of individuals to be able to complete daily tasks and understand the sequence of schedules. However, some cases of flexibility disorders in children with ASD have an impact on difficulties in dealing with schedule changes which are indicated by anxiety. This study aims to implement social stories to increase flexibility in children with ASD. This study uses the SSR (Single Subject Research) method with an A-B-A design. The data analysis was carried out in two stages, namely analysis between conditions and analysis under conditions. Based on the results of the research between conditions, the results overlap percentage is 0%. The results concluded that social stories influence flexibility by reducing the anxiety level of autistic children when there is a change in the schedule of their activities at school.