The invention relates to lavandin essential oil and a refining method thereof. The lavandin essential oil obtained through steam distillation is subjected to low temperature pre-freezing and low temperature freezing centrifugation to remove partial fatty acid, eudesmol and camphor; primary molecular distillation and secondary molecular distillation are conducted to remove most eudesmol and camphor. After refining, the content of fatty acid in the lavandin essential oil is reduced from 4.23% before refining to 2.61%-2.88%; the eudesmol content is reduced from 18.31% before refining to 0.67%-0.98%; the camphor content is reduced from 14.57% to 1.40%-1.48%, and the requirements in the national standard (GB/T12653-2008) of the camphor content are met; in the whole refining process, the yield is 65.22%-74.28%; according to the lavandin essential oil and the refining method thereof, a technology is simple, the yield is high, a technology combining freezing centrifugation and molecular distillation is adopted, the contents of the fatty acid, eudesmol and camphor in the lavandin essential oil are reduced, the eudesmol content reaches the national standard requirements, and the quality andmarket competitiveness of the lavandin essential oil are improved.