N,N'- hexylbispyrrolidinone was synthesized from γ-butyrolactone and hexanediamine. Its boiling point is 440-450 ℃. The reaction conditions were optimized. It was found that the yield of the product was 76.22% with the molar ratio of ester to amine 2.5:1, 280℃, 2 h. The purified product was characterized by elemental analysis, GC-MS, HNMR，IR. It was confirmed that the synthetic product was N,N'- hexylbispyrrolidinone. The aromatics extraction performance of N,N'- hexylbispyrrolidinone was preliminarily studied, the liquid-liquid ternary phase diagram showed that N,N'- hexylbispyrrolidinone has excellent aromatics selectivity and good solubility. The aromatic extraction properties of N,N'- hexylbispyrrolidinone at different extraction temperatures were also investigated. With the increase of extraction temperature, the selectivity of N,N'- hexylbispyrrolidinone for aromatics extraction decreases and the solubility increases, but the overall change is small and the solvent performance is relatively stable. The experimental results show that N,N'- hexylbispyrrolidinone is feasible to be used as aromatics extraction solvent for reforming gasoline and diesel oil.