Catering is an important part of Chinese culture. Chinese people's love of eating breeds prominent cooking skills and abundant cultural connotation, and catering culture of China enjoys great reputation throughout the world. On the other hand, with the speedy development of China's economy and the improvement of the general living quality, Chinese people pay attention to scientific eating, green foods and health. The increasing abundance of substance not only completely meets people's demand of substance, but also changes their concept,habit and structure of eating.