During the process of school education, children with LD have defects both in spatial WM and controlled attention. However, research on the relation between them is few. Therefore, the study focused on investigating the relation using IOR paradigm as research method of controlled attention. Inhibition of Return (IOR) is the hysteresis phenomenon shown by the reaction of the previous note on the location. And working memory (WM) is a significant factor that affects the appearance and magnitude of IOR. Based on the previous researches, the paper studies the impact of spatial WM on multi-location IOR. The result shows that the load of spatial WM makes multi-location IOR disappeared as well as influencing maintenance and update of information of multi-location IOR. Meanwhile, it proves that spatial WM has an interactive impact on the selective attention.