Explore how overlapping stent deployment, can resolve flow diverter (FD) migration in aneurysm treatment. This case involves a 71-year-old woman with vision dimness and diplopia due to a large supraclinoid ICA aneurysm. During FD treatment with coiling, the FD migrated into the aneurysm sac but was successfully repositioned using an overlapping stent. The patient recovered well with normal neurology.