Sustainable packaging refers to a packaging form guided by the concept of sustainable development, which minimizes its impact on the environment and promotes resource recycling through optimized design, material selection, and lifecycle management. Its core goal is to achieve a balance between environmental, economic, and social benefits throughout the entire lifecycle of packaging, including stages such as raw material collection, production, use, and waste disposal.The key principles of sustainable packaging include Reduce, Reuse, Recycle, and Degradable, known as the 3R1D principle. This means that in the design phase, priority should be given to reducing material consumption, using renewable or recyclable materials (such as recycled paper, biodegradable plastics), and ensuring that packaging can safely degrade or enter the recycling system after disposal, avoiding environmental pollution. For example, adopting lightweight design to reduce material usage, or using a single material for easy recycling.Compared to traditional packaging, sustainable packaging places greater emphasis on environmental load control throughout the entire lifecycle. Traditional packaging often relies on non degradable plastics, which may cause long-term environmental pollution; Sustainable packaging reduces energy consumption and ecological damage through clean production processes, reusable modes (such as turnover boxes), and waste recycling systems. This transformation not only reduces landfill and carbon emissions, but also conforms to the intensive development model of resource recycling.