In the background of the rapid growth of urban space, it is helpful to carry out the study of urban spatial growth performance to solve the problem of urban spatial growth. This study provided basis of determining the development strategy of urban space and formulating spatial policy. Evaluation methodology of urban spatial growth effect is the way to judging the element configuration and the operation of elements is reasonable, efficient and fair during the process of urban growth space. Three evaluation systems are established in this paper, there are structure effect, economic effect and fair allocation effect. Evaluation of urban spatial growth effects by objective law will get space growth effect evaluation function. An empirical analysis of Chongqing city as an example we can get these results:the urban spatial growth effect of Chongqing from 2004 to 2013 is on the rise, structure and fairness is also on the rise; the reasonable allocation effect and the economic allocation effect are significant. These results reflect the urban construction land use structure optimization, land use efficiency and other aspects of the problem.