In this paper, the ionic liquid (IL) was used as adjuvant fbr the extraction of taxol from Taxus chinensisusing methanol solution, and the extraction was optimized by single factor experiment. The results showed that 60 % methanol solution with addition of 1.0 wt%[C4MIM]FeCl3Br was used as the extractant, solid-liquid ratio was 1 : 10, extraction temperature was 40 ℃, ultrasonic time was 30 min, the extraction yield oftaxol was 0.239 mg·g^-1. Compared with traditional method, this method can improve the extraction and save more extraction time and the extraction solvent.