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Carbon footprint has become an effective method for assessing carbon emission, aiming at measuring the influence of atmosphere environment and climate change caused by human activities across the whole life cycle of a product or an activity. With rapid urbanization, residents in cities are playing increasingly important roles in the alteration of environment. Meanwhile, consumption is one of the remarkable drivers of environmental pollution in city areas. With the perception that unsustainable consumption patterns are the major cause of the continued deterioration of the global environment, environmental concerns move to household sectors and related lifecycle activities. Food is the most important consumable of daily household life. The carbon footprint of food shows the carbon emission of the food provisions for the whole city and the contributions to the climate change. Based on the theory and model of carbon footprint, and using the life cycle analysis (LCA) , we calculate and analyze the carbon footprint of food consumption according to the reality of Beijing city and the food supply plan. The result shows that the total carbon footprint of food consumption is 4. 768 ×10 6 t, about 6% of the total carbon footprint of Beijing, corresponding to 310. 0kg / cap, and accounting for 23. 3% of the total emission of household consumption, which is only 5. 96% of the total carbon dioxide emission in Beijing. This reflects the limited impact of food consumption on the environment, carbon emission, and climate change. If Beijing wants to achieve a goal of carbon reduction of more than 6% , it is not sufficient to take measures in the field of food consumption alone. The most important part of food consumption carbon footprint is from grain, and the second part is from fruits and vegetables. These

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