The recent domestic developments in the study on nylon nanocomposites prepared by montmorillonite are reviewed.The technologies for surface modification of montmorillonite and preparation of nylon/montmorillonite nanocomposites are also summarized.Nylon/montmorillonite nanocomposites possess unique structures as well as excellent mechanical properties that their conventional counterparts don′ t have,so it can be expected that it would be widely used in a lot of fields in the future.