1. First of all, the total amount of food should be enough. Besides breakfast, lunch and dinner, we need to have a dinner. 2. Secondly, pay attention to the deployment of diet varieties and patterns. Because of poor appetite at night, we should eat more foods rich in protein and vitamins and some light and delicious foods, not greasy, and strive to achieve more varieties, new patterns, full of color and flavor to stimulate appetite. 3. Supply more foods rich in vitamin A. Night shift is easy to make people tired. Vitamin A participates in regulating the synthesis of rhodopsin, which can improve the adaptability of human body to dim light. Vitamin A mostly exists in animal foods, especially in animal livers, followed by egg yolk, fish eggs and milk. In addition, the demand for vitamins B and C for night shift work has also increased, so it should be supplemented appropriately. Finally, we should improve the quality of protein. It is best for animal protein to account for half, because animal protein contains 8 kinds of amino acids necessary for human body.