The predecessor of the lunch box is the food box, which is used to hold food, tableware or other gifts. It is a large box that can be picked up. The food box is a large number of utensils used to hold food in the old folk. With the development and change of the times, it has completely faded out of modern life and become a collection in the antique market. The gentry and celebrities in ancient times would go out to visit friends, or participate in the activities of poetry clubs and literary clubs, drink and have fun with their close friends, and often prepare some food and fruits in advance as food and drinks for the entertainment. In early spring, when Wenzhe husband goes out for an outing, he will also bring food, wine and vegetables for a picnic. A food box is a long box that is specially used to hold food, wine and vegetables and is easy to carry. It is made of wood, bamboo, enamel, lacquer and other materials, most of which are wood. Especially the hard wood with fine texture and smooth color, such as red sandalwood, yellow rosewood, chicken wing wood and sour twigs, is strong and tenacious. The food box made of it is resistant to bumps and has a certain weight, so it is not easy to shake when picking and lifting. In addition, most of the furniture in ancient times is tenon and mortise structure, and hardwood has unique advantages in splicing and production. The exquisite hardwood food box can not only be watertight, but also make full use of the inherent texture and color of the wood in appearance, giving people a sense of elegance and solemnity, which is both beautiful and practical. The lunch box evolved from the lunch box. With the historical development of society, the function of the lunch box in people's life has been replaced by a lighter lunch box.