The efficiency of green economy is a key indicator to measure the development of regional green economy. This paper takes labor, capital and technology as input indicators, green GDP and air quality index as expected output and unexpected output indicators, establishes BCC model, and measures the green economic efficiency of Anhui Province based on relevant data from 2012 to 2020. According to the division of regions in southern, central and northern Anhui, it is analyzed that there are obvious differences in green economic efficiency among different regions. The green economic efficiency in southern Anhui is high, while that in central Anhui is low, showing a U-shaped development trend in general.