Abstract:Abstract：With the relative content of 1，8-cineole and terpinene-4-ol in tea tree oil as the index，the orthogonal experiment was carried out on the basis of single factor experiment by means of wiped-film molecular distillation technology，and the relative content was determined by gas chromatography.The results showed that the distillation temperature was 38℃，the distillation pressure was 110 Pa，the feed rate was 2.5 mL/min，and the scraping film was rotated.At 450 r/min，the relative content of 1，8-cineole in the light component increased from 2.674%to 5.33%.At 38℃，110 Pa，3 mL/min feed rate，450 r/min scraping speed，the relative content of terpinene-4-ol in the reconstituted component increased from 43.416%to 65.17%.Using this technology，the enrichment effect is obvious，and it can provide reference value for industrialized production of volatile oils.