1 day. When storing sushi, whether it is stored at room temperature or refrigerated in the refrigerator, it needs to be put into a fresh-keeping box, which reduces the contact between sushi and air and increases the storage time. The essence of sushi is cooked glutinous rice and some side dishes, so it can only be stored at room temperature for one day, and it can be stored in the refrigerator for up to three days. Sushi is one of the most world-famous foods in Japanese food culture. It not only has an ancient history of thousands of years, but also is increasingly loved by people all over the world.