Chitosan is a safe and friendly substance for the human organism; therefore, it has become of great interest not only as an underutilized resource, but also as a new functional material of high potential in various fields. Some unique properties make chitosan an excellent material for the development of new industrial applications and recent progress in chitosan material is quite noteworthy. In this review, we mainly take a closer look at various chitosan applications and intend to provide interdisciplinary insight in the scientific knowledge immediately usable to realize fabrications. In addition, based on current research and existing products, some new approaches in this fascinating area are thoroughly discussed.