Changtang town of Qingxiu district of Nanning city was chosen as the research region. An index system including sub-system of economic, society, resource and environment, population, and 18 induces, was constructed. Principal component analysis was used to assess the sustainable development of Changtang town according the observation data of 2010 to 2014. The results showed that the sustainable development capacity of this town show an increasing trend during 2010-2014. The comprehensive score grows to 16.85 from -17.18 which grow 1.98 times. The sustainable development level rank of the sub-system is: society > resource and environment>population> economic.