Abstract: Based on the panel data of 28 provinces (municipalities and autonomous regions) in China from 1995 to 2015, the results of the study on the energy efficiency of China's provinces based on the DEA model and the Malmquist index show that:On the whole, energy efficiency and total factor energy productivity in each region increased from 1995 to 2015; Energy efficiency and total factor energy productivity in different regions were different; Energy efficiency in many regions, such as Sichuan, were in the frontier, while energy efficiency in Qinghai was low. In most, the technical efficiency of the region is high, indicating that the region has maintained a high level in improving the management technology level, introducing advanced technology equipment and production management optimization.

Key words: energy efficiency, total factor energy productivity, DEA model, malmquist index