Abstract:Citrus plant is the general term for Citrus L.，Fortunella，and Poncirus，which include oranges，tangerines，lemons，grapefruits，and citrons widely grown throughout the world.The primary essential oil components of citrus plants are terpene compounds and their oxygenated derivatives.Although there are certain differences in the types and content of chemical components according to production areas，seasons，climates，and cultivation conditions，the extraction methods of citrus plant essential oils mainly include cold pressing and steam distillation，solvent extraction，microwave extraction，and supercritical fluid extraction.With advances in technology and increases in demand，more novel and effective technologies have emerged in this field.Citrus plant essential oils prepared by these extraction techniques often have a strong aroma and multiple effects；these essential oils are widely used in food，cigarettes，daily chemicals，medical products，and other products.In the study，the composition，extraction methods，and applications of citrus plant essential oils were reviewed to provide a theoretical basis for further research and utilization of these essential oils.