Abstract: The Yangtze River Economic Belt can coordinate the common development of China’s eastern,central and western regions,and promote China’s economic development.Its construction is of great significance to China’s overall upward development.Based on the provincial panel data of the Yangtze River Economic Belt’s smart forestry from 2012 to 2020,this study employed a three-stage DEA-Malmquist model to investigate the input-output efficiency of the forestry industry.The research results showed that its real input-output efficiency was low as a whole.The improvement of industrialization level would increase the input redundancy of forestry listed companies’ R&D investment,forestry informatization investment and forestry land area.The improvement of R&D level could save the input of the above three kinds of resources.The continuous improvement of regional GDP would produce redundancy on forestry informatization investment and forestry land area investment.Based on the research results,this study proposed recommendations from three aspects:development mode,technological innovation,and industrial structure.