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在有向无环图（DAG）技术的基础上,研究了能源消费、污染物排放与中国经济增长之间的同期因果关系,并以此为依据对SVAR模型进行了识别,研究了变量之间的动态关系。研究结果表明,经济增长结构与能源消费结构对能源消费量、经济增长量以及污染物排放有着重要影响,而能源消费对经济增长只具有短期影响。“,”Based on the Directed Acyclic Graphs （DAG）technology,this paper studies the contemporaneous causal relation,and based on which to identify the SVAR model and to study the dynamic relations between variables.This paper not only studies the relations between energy consumption,pollution omission and China＇s economy,but also the relations of energy consumption structure,economy structure between those three variables.The results indicate that energy consumption structure and economy structure have important influence on energy consumption,pollution omission and China＇s economy,and also indicate that energy consumption only has short-term influence on economy growth.