The disposable plastic snack box is an appliance made of resin or other thermoplastic materials through high-temperature hot-melt plastic injection molding technology. In terms of application, disposable plastic fast food boxes can be divided into lunch boxes, fresh cut and preserved fruit boxes, semi-finished food boxes and others. In terms of raw materials, disposable plastic fast food boxes are mainly classified into PP (polypropylene) fast food boxes, PS (polystyrene) fast food boxes and EPS (expanded polystyrene) fast food boxes. Compared with the other two raw materials, PP plastic fast food box has high heat resistance and is the only fast food box that can be heated in a microwave oven. The PP plastic snack box is suitable for almost all foods and beverages because of its high chemical stability and good corrosion resistance. The degradation time of PP, PS and EPS is different, depending on the environmental conditions of degradation. If they are all filled in a landfill under the same environment, PP and PS plastic fast food boxes will take about 20 to 30 years and 40 to 50 years to degrade, respectively, while EPS plastic fast food boxes need hundreds of years to degrade. However, if these fast food boxes are exposed to certain elements, such as sunlight, moisture and air, they will accelerate degradation. At the same time, because the Chinese government is actively investing in environmental protection, PP plastic fast food boxes that are easy to recycle and can be accelerated by adding degradable materials (such as starch materials, photosensitizers and biological inhibitors) to the production of fast food boxes have become the disposable plastic fast food box industry in China Mainstream.