Abstract: The adjustment of industrial structure is the objective requirement of sustained and healthy development of agricultural economy, and the important basis for improving people's lives, and also the driving force for enhancing international competitiveness. This paper uses the GRA method to analyze the correlation between the total agricultural output value with departments and also analyze the correlation between the agricultural departments from 2006 to 2015 of Qujing. The results show that the correlation degree between departments and agriculture is as follows:forestry, planting, animal husbandry, fishery,and the correlation degree between departments is lower than 0.7, it means that the interaction between departments is not strong. This paper puts forward some suggestions for optimizing the structure of agricultural industry in Qujing,it is also as a reference for the adjustment and optimization of agricultural industry structure in other regions.