Rapid synthesis of ionic liquids were discussed in this study. Improve the traditional synthesis time and increase the yield of ionic liquids with microwave. The synthetic [Bmim]PF6 ionic liquid were need in second step. Synthesized by microwave and conventional synthetic comparison the original 24 to 48 hours of reaction time reduced to 1 hour. [Bmim]PF6 ionic liquids the best yield was about 49.5%. The results showed that the use of microwave assisted synthesis of ionic liquids can effectively reduce the synthesis time and the yield synthesis in comparison with the traditional reaction.