IntroductionrnSmart growth initiatives have been paid more and more attention and the implementation has sharply increased. With the rapid urban-ization and population growth, taking smart growth into consideration of urban planning appears necessaryrnIn this paper, we develop a metric, named Smart Growth Evalua-tion Index (SE in short) to measure the growth plans of the two chosen cities (Sanya and Wolfsburg) and help the two cities develop growth plans. Then we evaluate our own growth plans with our metric based on the 3Es.