Based on the study of the change pattern of green innovation inputs and outputs in Foshan, the NDDF model was applied to measure the green innovation efficiency of Foshan City during the decade from 2010 to 2019 and compared with other cities in the Pearl River Delta to summarize and condense the characteristics of green innovation in Foshan City. The results show that the innovation inputs of the five districts in Foshan vary widely, the non-desired output situation is not ideal, and the level of green innovation in Foshan is in a lower position in the PRD. Foshan needs to further promote the synergistic development of green innovation in each district, implement differentiated management for each district and further increase the training of talents and energy saving and emission reduction.