There are some differences in design and function between junior high school students' lunch boxes and primary school students' lunch boxes. Junior high school students' lunch boxes have some special design considerations compared with primary school students' lunch boxes. For example, junior high school students' lunch boxes are bigger and can hold more food, because junior high school students need to consume more calories and nutrition. Junior high school students' lunch boxes will have more compartments to store different kinds of food to meet their more diverse dietary needs. In addition, the appearance design of junior high school students' lunch boxes is more concise and mature, which conforms to their age aesthetics and preferences.