There are 4 million catering outlets in China, and super-large-scale enterprises have emerged. The turnover of 11 enterprises exceeds 1 billion yuan, and that of 34 enterprises exceeds 511 million yuan, of which the turnover of the top 11 enterprises reaches 33.676 billion yuan, up by 18.4% year-on-year, accounting for nearly 51% of the total turnover of the top 111 enterprises, reaching 49.34%. The overall scale of the top 111 enterprises has steadily increased, and the industry concentration has further increased. The analysis shows that the chain catering industry is mainly concentrated in the eastern region and big cities, but it is accelerating to the western region and the medium-sized city of seepage velocity.

first appeared in Germany and was called "quickmeal" or "fastfood" in English. After it was introduced into China, the Chinese name was "fast food", that is, cooked meals that can be served at any time. In fact, what we usually call "fast food" should be called Chinese fast food, commonly known as box lunch. It is a way of eating that Chinese food absorbs foreign food culture. It has entered thousands of households with its bright, convenient and economical features.

there was a kind of banquet called "liban" in the Tang dynasty market, and this "liban" was the fast food in the Tang dynasty. According to Li Zhao's Supplement to National History, Tang Dezong summoned Wu Cuo temporarily, appointed him as "Jing Zhaoyin" and asked him to take up his post immediately. Before Wu took office, he invited relatives and friends to have dinner at home. Although time was tight, when the invited guests arrived, the banquet was already set on the table. Some guests were puzzled, and the people in Wu's house replied, "The two cities are very polite every day, so they can take it from the pot, so it is possible to set up a restaurant for three or five hundred people." In the Song Dynasty, in Tokyo, Hang Cheng and other places, there was a kind of catering called "calling by the hour" and "duh-ho-ho-ho" everywhere in the market, just like the so-called convenient fast food today.

With the development of social economy, fast food has become the mainstream lunch for white-collar workers in first-tier cities such as Beijing, Shanghai and Shenzhen, and the style of fast food has gradually evolved and upgraded, which not only pays attention to the balance of nutrition, but also has more colorful styles.