Space station food can be divided into three categories: daily menu food, emergency food and extravehicular activity food. Food is the same as the ground, including frozen food, frozen food and normal temperature food. Emergency food supply is food prepared when a serious accident occurs in the space station or it cannot be supplied for some reason. It has been stored for 45 days. Extravehicular activity food is the food and water used by astronauts in extravehicular activities, which can ensure the amount of extravehicular activity of astronauts for 8 hours. Astronauts can choose their favorite food six months before launch, and space food experts will make recipes for them. All food is put in a "micro-pressure logistics cabin" and moved to the living cabin after launch. The space shuttle and transport ship also brought them fresh fruits and food. The food in the International Space Station is rich enough to open a "space restaurant".