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Earth, agriculture, fishing, hunting and gathering … The ways of acquiring food and also the factors dominating the settlements' landscape pattern in the primitive society, has been gradually replaced by industries like manufacturing, financial industry and service industry through thousands years of urbanization. Under the COVID-19 epidemic, the common problem faced by different countries and regions — food shortage, stimulates the authors to reflect on the place of food in urban life. Through the investigation on Shanghai, Xi'an, Wuhan and Chengdu, four cities that featured by different and distinctive food culture, exploration of the distribution pattern and potential of grain origin, delivery chain, processing chain and retailors in these cities, the authors intend to take urban green space as carrier to improve efficiency of food production, absorption and processing, alleviate food problems under social crisis and improve the city's ability to respond to social emergency. Through the investigation and research on the culture, traditional cuisine and environment of four typical cities in China, the significance and role of cuisine in the development of different cities were explored.

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