This double-layer snack box has two separate compartments, allowing for the classification and orderly storage of different foods. It is suitable for use as an outdoor food box, lunch box, lunch box for children, as well as DIY snack boxes for adults and children. The box body is made of food-grade BPA-free plastic and is reusable. It serves as a practical container for meal preparation and food preparation, helps adults control the portion size of snacks, and is also suitable for children when they are at school, on picnics, or on road trips. The snack box is designed for stacking, allowing for compact nesting when not in use to save space. When in use, it can be stacked vertically for easy organization and quick access, avoiding kitchen clutter. The lid has good sealing performance and can prevent food from spilling. It is highly portable and suitable for use in outdoor scenarios such as picnics and camping.