Abstract: Nowadays, the dietary habits of Chinese residents have changed from paying attention to sufficient quantity to emphasis on the balanced collocation of meals, which leads to the changed behavioral strategy and behavior of rural subjects. Based on the concept of big food and on the basis of the cognition of the spatial behavior of rural subjects under the guidance of residents’ dietary needs, the rural value index system was constructed from three dimensions of food supply, food balance and food health, and the spatial characteristics and advantageous value types of rural value in Chongqing were analyzed, and the realization mechanism was also analyzed. The results showed that: (1) The rural value could be divided into food supply value, food balance value and food health value due to the difference of the spatial action behavior of rural subjects under the concept of big food; (2) The rural value of Chongqing presented a spatial pattern of “high in the east, low in the west and prominent in some areas”. The main urban area was dominated by the food supply value, the Wuling Mountain area in southeast Chongqing was dominated by the food health value, and the Three Gorges Reservoir area was dominated by the food balance value. (3) The realization mechanism of rural value was interpreted from the three dimensions of resource endowment, agricultural activity and agricultural policy, based on which the authors put forward suggestions on the realization of rural multi-value under the concept of big food.