Resource is important basic material for human survival and development. It plays an irreplaceable role in the rapid development of economy and greatly improving people's living standards. With the development of economy, people's demand for energy is increasing, because the resources are limited on earth, therefore, it is particularly important to accurately predict future energy consumption. This paper uses ARIMA model to analyze 19812012 annual energy consumption data of Chongqing based on 〖WTBX〗Chongqing Statistical Yearbook 2013〖WTBZ〗. The result shows that the predict of future energy consumption by ARIMA (2,3,2) model is more accurate, which provides reliable basis for resource consumption of Chongqing.