Abstract: The moderate-low temperature coal tar was separated into three cuts including naphtha,middle oil and washing oil.The compositions of the three cuts were analyzed by gas chromatography and gas chromatography-mass spectrum methods.The analysis results showed that these cuts were composed from 154 kinds of main chemical components,including 67 kinds in naphtha,45 kinds in middle oil and 42 kinds in washing oil.And the naphtha was composed from aromatics and olefins,the middle oil was composed from phenols and hydrocarbons,the washing oil was composed from aromatics and alkanes.Thus,through hydrogenation,benzene,toluene,xylene and gasoline could be obtained from naphtha;phenol and diesel oil could be obtained from middle oil;and diesel oil could be obtained from washing oil.The analysis data provided a useful reference for deep processing and comprehensive utilization of the moderate-low temperature coal tar.