Environmental pollution problems caused by plastic-based packaging promote alternative sustainable solutions to be imminent. Chitosan and gelatin are attracting great attentions in food packaging applications and representing interesting biomaterials for developing edible packaging film due to their excellent inherent properties including degradability, edibility, film-forming property and compatible nature. With the development of technology and economy, food-grade chitosan and food-grade gelatin are emerging and produced under legislation or standards proposed by the government or organization. These chitosan and gelatin could form uniform film-forming solutions and fabricate edible films by strategies including casting, electrospinning and thermoplastic method. The emerging chitosan-gelatin composite films with excellent physical properties including mechanical property, surface hydrophobic property, color property, barrier property and thermal property have achieved great developments. This article comprehensively reviews recent advances in legislation of raw materials, fabrication strategies and physical properties of chitosan-gelatin based edible films.

塑料包装引起的环境污染问题促使迫在眉睫的替代性可持续解决方案迫在眉睫。壳聚糖和明胶由于其优异的固有特性（包括可降解性，可食用性，成膜性和相容性）而在食品包装应用中引起了广泛关注，并代表了用于开发可食用包装膜的有趣生物材料。随着技术和经济的发展，正在根据政府或组织提出的立法或标准来生产和生产食品级壳聚糖和食品级明胶。这些壳聚糖和明胶可以通过流延，静电纺丝和热塑性方法形成均匀的成膜溶液并制造可食用膜。新兴的壳聚糖-明胶复合膜具有优异的物理性能，包括机械性能，表面疏水性能，着色性能，阻隔性能和热性能。本文全面综述了壳聚糖-明胶基可食用膜在原料立法，制备策略和物理性能方面的最新进展。