Abstract: Based on life cycle inventory analysis and fuzzy analytic hierarchy process,this paper establishs an environmental impact assessment system for wood fuels,which includes 17 comprehensive indicators in five dimensions i.e. greenhouse gas,soil quality,other emissions,water quality,and biodiversity. Among all the dimensions,greenhouse gas（0.33）presents the highest weight,followed by soil quality（0.26）and other emission gases（0.25）,while water quality（0.10）and biodiversity（0.08）weigh the lowest.The system is used in an example for assessing the environmental sustainability of wood fuels of Robinia pseudoacacia plantation in Luoning County,Henan Province. The results are as follows:（1）The final score of wood fuels made from Robinia pseudoacacia in Luoning County is 0.44,which indicates that wood fuels industry in this area will play a significant role in reducing emissions,but seems reluctant to reach high sustainability.（2）The scores of positive indicators are all less than 0,including soil carbon saturation deficit,total soil nitrogen,and soil total organic carbon,which may attribute to the management scheme of local Robinia pseudoacacia plantation with non-fertilization. The system can provide a scientific reference for the environmental assessments of the wood fuels industry.