An essential oil extractor is an experimental device used in biology education to extract essential oils from plant materials. It usually uses steam distillation method, which generates steam by heating, carries out volatile aromatic oils in plants, and then condenses and separates essential oils. In biology teaching, essential oil extractors allow students to personally operate the process of extracting essential oils, understand the chemical composition and extraction principles of plant essential oils. Students can learn the basic knowledge of botany, spice chemistry, and natural product chemistry through experiments, and master the basic skills of essential oil extraction. Essential oil extractor is an important tool in biological experimental teaching, which helps cultivate students' experimental operation ability and scientific exploration spirit.