Abstract: Gardenia jasminoides essential oil is a natural product with aromatic and medicinal properties.The Gardenia jasminoides essential oil was extracted using the steam distillation method. Using the extraction amount of Gardenia jasminoides essential oil as an indicator, the effects of raw material wetting, distillation temperature, extraction time, and filling thickness on the extraction amount of essential oil were investigated through single-factor experiments and orthogonal experiments. The optimal process for extracting G. jasminoides essential oil by steam distillation was determined. The results indicated that the maximum extraction amount of G. jasminoides essential oil, with an averageextraction amount of 95.04±0.22 mg·kg⁻¹, was achieved when the raw material was pre-wetted, the distillation temperature was set at 105 °C, the extraction time was 240 minutes, and the filling thickness was 4 kg(75.49 mm). This provides a basis for the industrial production of gardenia essential oil.