Abstract: China is on an important stage, in which social economy and urbanization are developed rapidly, and the constant urban and rural population mobility and economic and social development elements'' destruction and interaction, resulting in the reconstruction of rural space. The purpose of this paper is to establish a theoretical basis and method for scientific construction of reasonable rural space function evaluation index system, and to provide a scientific basis for the rural functional orientation and direction of development and a reference for the rural land use planning, management and ecological protection. In this paper, we specified rural spatial multi-function into rural production, rural ecological function and rural life function. Combining with the study of rural land use characteristics, we selected 15 indicators including per capita food production, rural population and area of cultivated land per capita the value of tertiary industry per capita, rural employment structure, gross output value of farming, forestry, animal husbandry and fishery, and the ecological service value, the forest coverage rate, wetland area ratio, per capita of water resources, soil and water loss rate, disaster index, hospitals and health hospital beds per 10,000 people, rural housing area per capita, urban and rural income balance index and rural residents per capita living expenditures for consumption. For data collection, we took entropy method to measure the value of the function of rural space and exploration of rural spatial pattern of differentiation and evolution tendency, and estimation method based on the GIS technology and Dagum Gini coefficient in different areas of Chongqing rural space function value of non equilibrium and dynamic distribution of empirical research. The results showed that the functional intensity of rural production space and ecological space was higher than that of rural life function, and the functional value of rural space in Chongqing city during 2003-2013 period was different. Rural space function value and spatial distribution of regional disparity in general showed low-high-low fluctuations in the unstable situation, that was, the total function of the rural space value gap was smaller in general, and the effects of the gap of economic development between the regions of the overall difference was obvious and density of rural space function value spatial distribution of ring increasing. The function of rural production space presented an upward trend. Rural ecological spatial function of the overall presented a low-high-low fluctuation of the unstable situation. The rural living space function was in a high-low-high-wave dynamic state. Inter regional disparity was the main reason for the non balanced development of rural ecological space and living space in Chongqing city. Each sub function intensity in different functional areas of disparities, especially between the Metropolitan Function Area, Newly Developed Urban Area and Northeastern Ecological Conservation Area, Southeastern Environment Protection Area, the gap of rural ecological space function and rural living space was large, and the gap tended to expand. Dagum Gini coefficient can not only effectively solve the problem of the regional disparity of source, but also can help descripting the sample distribution to effectively solve the overlapping problem between samples. The result was credible and had high reliability. It had an important complementary role for the research of rural territorial function theory and research methods. The results of this study on rural functional provided 1)scientific basis to the position and development direction, 2)policy reference for rural land use planning, management and ecological protection, and 3)a good example for other rural areas on the function of fostering and rural construction. In theory, this paper only made a macro evaluation, and the evaluation of the micro unit needed to be further verified to improve the science and rational. At the same time, the influence factors and consequences of the non equilibrium of rural spatial function should be considered in this study.