The graded deconstruction activation catalytic deoxygenation (GDACD) technology positively influenced biomass pyrolysis product quality, but the energy consumption and environmental impact for industrial applications were still uncertain. To realize the requirement of biomass conversion for high energy efficiency and low environmental impact, this study developed a poly-generation system of GDACD, syngas combustion, and waste energy power generation to produce high-quality oil with a high content of single-ring aromatic and industrial steam. The poly-generation system was investigated and evaluated according to the energy and exergy balance and environmental pollutant emissions. Inconsistency of the analysis baseline resulted in a relatively large error between simulated and experimental results. The simulation result of oil components closely matched the experimental results with the largest error of 5.88 % for the N-containing compounds in the bio-oil. The high water and oxygen content in pine sawdust led to the designed poly-generation system not being energy self-sufficient and required an additional external energy supply of 270801.33 MJ·h